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ayushagnihotri2025
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179 submissions in current year
SCHOOL (5)
BASIC (125)
EASY (408)
MEDIUM (990)
HARD (204)
- Reverse a linked list
- Occurence of an integer in a Linked List
- Delete N nodes after M nodes of a linked list
- Pairwise swap elements of a linked list
- Given a linked list of 0s, 1s and 2s, sort it.
- linked list of strings forms a palindrome
- Detect Loop in linked list
- Remove duplicates from an unsorted linked list
- Sorted insert for circular linked list
- Split a Circular Linked List into two halves
- Delete node in Doubly Linked List
- Inorder Traversal
- Reverse a Doubly Linked List
- Bubble Sort
- Selection Sort
- Insertion Sort
- Check for BST
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Maximum Width of Tree
- Delete without head pointer
- Height of Binary Tree
- Check for Balanced Tree
- Nth node from end of linked list
- Middle of a Linked List
- Left View of Binary Tree
- Delete Middle of Linked List
- Decimal Equivalent of Binary Linked List
- Transform to Sum Tree
- Intersection of two sorted Linked lists
- Find Transition Point
- Queue using two Stacks
- Remove duplicate element from sorted Linked List
- Stack using two queues
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Determine if Two Trees are Identical
- Root to leaf path sum
- Square root of a number
- Print all nodes that don't have sibling
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Max sum path in two arrays
- Run Length Encoding
- Largest subarray of 0's and 1's
- Remove duplicate elements from sorted Array
- Level order traversal Line by Line
- Print BST elements in given range
- Largest subarray with 0 sum
- Minimum Depth of a Binary Tree
- Remove duplicates in array
- Odd even level difference
- Binary Tree to BST
- Unique rows in boolean matrix
- Remove every kth node
- Check if all leaves are at same level
- Multiply two linked lists
- Josephus problem
- You and your books
- Max distance between same elements
- Print matrix in diagonal pattern
- Check whether BST contains Dead End
- Delete a Node in Single Linked List
- Kth largest element in BST
- Minimum distance between two numbers
- Find duplicates in an array
- Count distinct elements in every window
- Check if two strings are k-anagrams or not
- Special Stack
- Root to leaf paths sum
- Three way partitioning
- Find Common Nodes in two BSTs
- Level order traversal
- Peak element
- Inorder Successor in BST
- Index of an Extra Element
- Union of Two Linked Lists
- Intersection of Two Linked Lists
- Insert in a Sorted List
- Split Linked List Alternatingly
- Sum of leaf nodes in BST
- Count More than n/k Occurences
- Root to Leaf Paths
- Reverse a string using Stack
- Symmetric Tree
- Delete Alternate Nodes
- Huffman Decoding
- Find the Sum of Last N nodes of the Linked List
- Count Pairs whose sum is equal to X
- Children Sum Parent
- Find length of Loop
- Median of BST
- Normal BST to Balanced BST
- Leaf under budget
- Linked List Matrix
- Reverse First K elements of Queue
- Remove Half Nodes
- Closest Neighbour in BST
- Brothers From Different Roots
- ZigZag Tree Traversal
- Delete middle element of a stack
- The New Line
- Learn to Comment
- For Loop- primeCheck
- The New Line - Java
- Learn to Comment - Java
- Precise Format - Java
- For Loop- primeCheck - Java
- Count Odd Even
- Swap the array elements
- Predict the Column
- Xoring and Clearing
- Find the Frequency
- Reverse an Array
- Queue Operations
- Get min at pop
- Frequency Game
- Find first set bit
- Rightmost different bit
- Check whether K-th bit is set or not
- Longest Consecutive 1's
- Modular Multiplicative Inverse
- Swap all odd and even bits
- Maximum occured integer
- Wave Array
- Frequencies of Limited Range Array Elements
- Equilibrium Point
- Leaders in an array
- Rotate Array
- Floor in a Sorted Array
- Minimum Number in a sorted rotated array
- Two Repeated Elements
- Roof Top
- Union of Two Sorted Arrays
- Subarray with given sum
- Print adjacency list
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Transpose of Matrix
- Rotate by 90 degree
- Determinant of a Matrix
- Boundary traversal of matrix
- Anagram
- Subarray with 0 sum
- Winner of an election
- Check if string is rotated by two places
- Strings Rotations of Each Other
- Isomorphic Strings
- Reverse Words
- Minimum indexed character
- Non Repeating Character
- Parenthesis Checker
- Evaluation of Postfix Expression
- Generate Binary Numbers
- Minimum Cost of ropes
- Activity Selection
- N meetings in one room
- Largest number with given sum
- Reach a given score
- Union-Find
- Count ways to N'th Stair
- Count number of hops
- Number of Unique Paths
- First Repeating Element
- Union of Arrays with Duplicates
- Numbers containing 1, 2 and 3
- Missing in Array
- Product array puzzle
- Roman Number to Integer
- Top K Frequent Elements in Array - |
- Intersection of two arrays
- Sort 0s, 1s and 2s
- Maximize Array Value After Rearrangement
- Pascal Triangle
- Non-Repeating Element
- Count the elements
- Rotation
- Find the closest number
- Sort by Set Bit Count
- Maximize sum after K negations
- Adding Ones
- Common elements
- Find the element that appears once in sorted array
- Split the Array
- Sorted and Rotated Minimum
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- Remove all duplicates from a given string
- Minimize the sum of product
- Move all negative elements to end
- Chocolate Distribution Problem
- Search in a Rotated Array
- Count pairs Sum in matrices
- Count the triplets
- Find Pair Given Difference
- Pairs with difference k
- Swap and Maximize
- Bitonic Point
- Left most and right most index
- Smallest subarray with sum greater than x
- Single Number
- Alternate positive and negative numbers
- Remaining String
- Check if frequencies can be equal
- Kth distance
- Rearrange string as alternate x and y occurences
- Remove Duplicates
- Nearest multiple of 10
- Reorganize The Array
- Facing the sun
- Max Sum without Adjacents
- Second Largest
- Convert array into Zig-Zag fashion
- Two Sum - Pair with Given Sum
- Rotate Bits
- Second most repeated string in a sequence
- Find all pairs with a given sum
- Number of occurrence
- K-Pangrams
- Reversing the equation
- Does array represent Heap
- Modify the Array
- Convert an array to reduced form
- Check if array is sorted
- Sum Pair closest to target
- String's Count
- Longest Common Prefix of Strings
- Longest substring with distinct characters
- Smallest number in one swap
- Find first repeated character
- Product Pair
- Min Number of Flips
- Substrings with same first and last characters
- Count pairs with given sum
- Segregate 0s and 1s
- Play With OR
- Three Great Candidates
- First element to occur k times
- Element with left side smaller and right side greater
- Find the closest pair from two arrays
- Array Subset of another array
- Count the Zeros
- First negative integer in every window of size k
- Four Elements
- Palindrome String
- Total count
- Save Ironman
- Pair with given sum in a sorted array
- Print Bracket Number
- Divisible by 5 or not
- Shop in Candy Store
- Odd Even Problem
- Binary representation of next number
- Last Match
- Split the string
- Is Binary Number Multiple of 3
- Padovan Sequence
- Extract the Number from the String
- Minimum Operations
- Check if a number is divisible by 8
- Check if divisible by 10
- Number of 1 Bits
- Find the Highest number
- Armstrong Numbers
- Compute sum of digits in all numbers from 1 to n
- Reverse Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Swap two nibbles in a byte
- Count digits in a factorial
- Copy Set Bits in Range
- Count Digits
- Maximum Sum Problem
- Number of digits
- Party of Couples
- Maximize dot product
- Shortest path from 1 to n
- Count Odd Factors
- Sum of all divisors from 1 to n
- Count numbers containing 4
- Find maximum number
- Trail of ones
- K-Palindrome
- Longest subsequence-1
- Power Set
- Reach the Nth point
- Minimum number of Coins
- Number Of Open Doors
- Break a number
- Perfect Numbers
- Minimum Cost To Make Two Strings Identical
- Nth item through sum
- Geek and its Game of Coins
- Maximize Toys
- Largest number possible
- Check if it is possible to survive on Island
- Recamans sequence
- Compare two fractions
- Trailing zeroes in factorial
- Choose and Swap
- Form a number divisible by 3 using array digits
- Sum of all prime numbers between 1 and N.
- Series GP
- Least Prime Factor
- Reverse Coding
- Find Nth root of M
- Fact Digit Sum
- Recursive sequence
- Juggler Sequence
- Tom and Jerry
- Summed Matrix
- Maximum Diamonds
- Arithmetic Number
- Surround the 1's
- Coverage of all Zeros in a Binary Matrix
- Exit Point in a Matrix
- Trace Path
- Inorder Traversal and BST
- Letters Collection
- Overlapping rectangles
- Print Pattern
- Array to BST
- Sum of dependencies in a graph
- Count all possible paths from top left to bottom right
- Shortest distance in infinite tree
- Find maximum volume of a cuboid
- Plus One
- Search insert position of K in a sorted array
- Maximum GCD of siblings of a binary tree
- Max Min
- Count the Substrings
- Smallest Subset with Greater Sum
- Minimum Sum of Absolute Differences of Pairs
- Smallest window containing 0, 1 and 2
- Insert an Element at the Bottom of a Stack
- Sort a k sorted doubly linked list
- Pattern 1
- Pattern 2
- Pattern 3
- Fibonacci series up to Nth term
- Stock Buy and Sell – Max one Transaction Allowed
- Maximum Depth Of Binary Tree
- Divisor Game
- Introduction to Trees
- Minimize the sum
- Absolute difference divisible by K
- Last modified ball
- Transform to Sum Tree
- Make array elements unique
- Find the Node with maximum GCD of the siblings of a Binary Tree
- Find the first node of loop in linked list
- Maximum Weight Node
- Type it!
- Min operations
- Last cell in a Matrix
- Max Sum without Adjacents
- Count number of free cell
- Balloon Everywhere
- Apple Sequences
- Reverse both parts
- Cutting Rectangles
- Frogs and Jumps
- Make Array Elements Equal
- Equal Left and Right Subarray Sum
- Make the array beautiful
- Remainder on dividing by 11
- Is it Fibonacci
- Taxi Booking
- Max Level Sum in Binary Tree
- Binary matrix having maximum number of 1s
- Number of Subarrays of 0's
- Distinct Difference
- Maximum Identical Bowls
- Bus Conductor
- Wifi Range
- Minimum Number
- Minimum Integer
- Seating Arrangement
- String Mirror
- Powerfull Integer
- Make Palindrome
- Binary Modulo
- Total Cuts
- Bit Magic
- Array Operations
- Dominant Pairs
- Total Traversal Time
- Ticket Counter
- Unique Number of Occurrences
- Is it a Leap Year
- Find Mode in BST
- Two Smallests in Every Subarray
- Split an array into two equal Sum subarrays
- Largest Pair Sum
- Two Swaps
- Maximize partitions in a String
- Count pairs with given sum
- Count Pairs whose sum is less than target
- Union of Two Sorted Arrays with Distinct Elements
- Intersection of Two arrays with Duplicate Elements
- Find All Triplets with Zero Sum
- Search in a row-wise sorted matrix
- Find Only Repetitive Element from 1 to n-1
- Unique Number I
- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- Clone List with Next and Random
- Wildcard Pattern Matching
- Max rectangle
- Subtraction in Linked List
- LRU Cache
- Points in Straight Line
- AVL Tree Insertion
- Partition array to K subsets
- Maximum subset XOR
- Merge two BST 's
- Longest Palindromic Substring in Linear Time
- Alien Dictionary
- Smallest range in K lists
- AVL Tree Deletion
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Maximum Path Sum between 2 Special Nodes
- Number of Turns in Binary Tree
- String Permutations
- Trapping Rain Water
- Max Circular Subarray Sum
- Merge Without Extra Space
- Smallest window in a string containing all the characters of another string
- Histogram Max Rectangular Area
- Maximum of minimum for every window size
- Find median in a stream
- Solve the Sudoku
- Strongly connected component (Tarjans's Algo)
- Allocate minimum number of pages
- Minimum Cost Path
- Word Ladder I
- Median of 2 Sorted Arrays of Different Sizes
- Stock Buy and Sell – Multiple Transaction Allowed
- Burning Tree
- Next Smallest Palindrome
- Count Pairs in an Array
- The Painter's Partition Problem-II
- Form a palindrome
- Numbers with one absolute difference
- Distinct palindromic substrings
- Count Smaller elements
- Largest rectangle of 1s with swapping of columns allowed
- Sid and his prime money
- Longest Prefix Suffix
- Number of distinct subsequences
- Minimum number to make median X
- Wildcard string matching
- Circle of strings
- Longest repeating and non-overlapping substring
- Sum-string
- Print all LCS sequences
- All numbers with specific difference
- Sub-arrays with equal number of occurences
- Edit Distance
- Minimum number of elements
- Minimum Points To Reach Destination
- Doctor Strange
- Minimum sum partition
- Number Formation
- Palindromic Partitioning
- Next Happy Number
- Stock Buy and Sell – Max K Transactions Allowed
- Check Tree Traversal
- Matrix Chain Multiplication
- Strictly Increasing Array
- Bit Difference
- Find Last Digit Of a^b for Large Numbers
- The Palindrome Pattern
- Very Tough Problem
- Nth Natural Number
- Kill Captain America
- Path of greater than equal to k length
- Return two prime numbers
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Longest valid Parentheses
- Longest Zig-Zag Sub Sequence
- Bike Racing
- Possible Paths in a Tree
- Word Break - Part 2
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Joey doesn't share food
- nCr mod M | Part 1
- Convex Hull
- Phone directory
- Next Optimal Move in Tic Tac Toe
- Rohan's Love for Matrix
- Queries on a Matrix
- Adventure in a Maze
- Closest Palindrome
- Articulation Point - II
- Optimal binary search tree
- Find the pattern
- Assignment Problem
- Travelling Salesman Problem
- Longest Path in a matrix
- Akku and Arrays
- Interesting Queries
- Word Wrap
- Hexadecimal to decimal counter
- Create your own Calculator
- Let's Play!!!
- Nth digit of pi
- Find the Maximum Flow
- Find minimum s-t cut in a flow network
- Smallest Positive Integer that can not be represented as Sum
- Secret Cipher
- 132 Geeky Buildings
- Corona Vaccine
- Shortest Range In BST
- Elixir of Life
- Find all possible palindromic partitions of a String
- Number of subsets with product less than k
- Longest substring to form a Palindrome
- Minimum X (xor) A
- Find all Critical Connections in the Graph
- Word Break (Trie)
- Minimum operations to convert array A to B
- Sorted Link List to BST
- Find duplicate rows in a binary matrix
- Longest Increasing Path in a Matrix
- Palindrome Pairs
- Array Partition
- Count occurrences of a given word in a 2-d array
- Number of distinct words with K maximum contiguous vowels
- Reverse a sublist of a linked list
- Word Ladder II
- Distribute candies in a binary tree
- Shortest Unique prefix for every word
- Search Query Auto Complete
- IPL 2021 - Match Day 6 - Semi Final
- IPL 2021 - Final
- Split Array Largest Sum
- Find number of closed islands
- Scrambled String
- Shortest Path by Removing K walls
- Count the number of subarrays
- Find the String
- Maximum Number of Toys
- Articulation Point - I
- Kth Smallest Number in Multiplication Table
- Rearrange the array
- Stock Buy and Sell – Max 2 Transactions Allowed
- Min Chars to Add for Palindrome
- Optimum location of point to minimize total distance
- Subset sums between the given range
- Maximum difference between pair in a matrix
- Concatenate Equal to Target
- Largest rectangular sub-matrix whose sum is 0
- Minimum swap required to convert binary tree to binary search tree
- Minimum time to fulfil all orders
- Maximum number of overlapping Intervals
- Longest Path in a Directed Acyclic Graph
- Cut woods
- Geek in a Maze
- Vertex Cover
- Partition a set into two subsets such that the difference of subset sums is minimum (Set-2)
- Check if all levels of two trees are anagrams or not
- K Centers Problem
- Maximum Triple Product
- Maximum Connected group
- Minimum travel time
- Expression Add Operators
- Burst Balloons
- Minimum Cost to Merge Stones
- Minimize Max Distance to Gas Station
- LFU cache
- Count Reverse Pairs
- Candy
- Minimum Window Subsequence
- Account Merge
- Maximum XOR With an Element From Array
- Chocolates Pickup
- Better String
- Count Lucky Permutations
- Count the Substring
- Minimum Number Of Sprinkler
- Select Nodes
- Largest Sum Cycle
- Greater or Less
- Fixing Two swapped nodes of a BST
- Shortest Path Using Atmost One Curved Edge
- Avoid Explosion
- Walls Coloring II
- Redundant Parenthesis
- Partition the Array
- Count Binary Strings With No Consecutive 1s
- Divide in Incremental Groups
- Max min Height
- Maximum Number of coins
- Median of the Subarrays
- Minimum BST Sum Subtree
- Special Digits
- Cake Distribution Problem
- Min Time
- Game Of Subsets
- Geekina Hate 1s
- Making A Large Island
- Meeting Rooms III
- Minimum Weight Cycle
- Reverse alternate nodes in Link List
- Reverse a Linked List in groups of given size
- Rotate a Linked List
- Add Number Linked Lists
- Rearrange a linked list
- Add 1 to a Linked List Number
- Merge 2 sorted linked list in reverse order
- Delete nodes having greater value on right
- Quick Sort on Linked List
- QuickSort on Doubly Linked List
- Count BST nodes that lie in a given range
- Merge Sort
- Quick Sort
- Construct Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Intersection Point in Y Shaped Linked Lists
- Diameter of a Binary Tree
- Heap Sort
- Merge two sorted linked lists
- Add all greater values to every node in a BST
- Sum Tree
- Construct Binary Tree from Parent Array
- Connect Nodes at Same Level
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Tree Boundary Traversal
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- Lowest Common Ancestor in a Binary Tree
- Min distance between two given nodes of a Binary Tree
- Square root of a number
- Maximum difference between node and its ancestor
- Range Minimum Query
- Absolute List Sorting
- Binary Heap Operations
- The Celebrity Problem
- Topological sort
- Vertical Traversal of Binary Tree
- Merge K sorted linked lists
- Find the number of islands
- Find kth element of spiral matrix
- Max sum in the configuration
- Get Min from Stack
- Serialize and deserialize a binary tree
- Gas Station
- Make Binary Tree From Linked List
- Toeplitz matrix
- Generate IP Addresses
- Check if subtree
- Extreme nodes in alternate order
- Kth element in Matrix
- Is Binary Tree Heap
- Clone a Binary Tree
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Distinct occurrences
- Max length chain
- Minimum Spanning Tree
- Additive sequence
- Largest BST
- Interleaved Strings
- Sum of permutations
- Sorted subsequence of size 3
- LRU Cache
- Box Stacking
- Count Palindromic Subsequences
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Maximum Difference
- Count of distinct substrings
- Palindrome Linked List
- Strongly Connected Components (Kosaraju's Algo)
- Rat in a Maze Problem - I
- Bipartite Graph
- Max sum subarray by removing at most one element
- Number of root to leaf paths
- Find the Closest Element in BST
- Pots of Gold Game
- Merge two BST 's
- Trie | (Delete)
- Merge k Sorted Arrays
- Length of longest palindrome in linked list
- Bridge edge in a graph
- Print Nodes having K leaves
- Find triplets with zero sum
- Sort a stack
- Duplicate subtree in Binary Tree
- Find the missing no in string
- Top View of Binary Tree
- k-th Smallest in BST
- Polynomial Addition
- Delete nodes greater than k
- Merge Sort for Linked List
- Maximum Bipartite Matching
- Euler Circuit in an Undirected Graph
- Euler circuit and Path
- Merge Sort on Doubly Linked List
- Ancestors in Binary Tree
- Binary Tree to CDLL
- Pair Sum in BST
- Occurences of 2 as a digit
- Complete Binary Tree
- Populate Inorder Successor for all nodes
- XOR Linked List
- Counting elements in two arrays
- Construct expression tree
- Linked List that is Sorted Alternatingly
- K Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Construct Tree from Inorder & Preorder
- Construct tree from Inorder and LevelOrder
- Arrange Consonants and Vowels
- Count the nodes at distance K from leaf
- Vertical sum
- Mirror of a given node
- Pairs violating BST property
- Insert in Sorted way in a Sorted DLL
- Check if Tree is Isomorphic
- Maximum path sum from any node
- pth common ancestor in BST
- Predecessor and Successor
- Leaves to DLL
- Largest Independent Set Problem
- Diagonal sum in binary tree
- Deletion and Reverse in Circular Linked List
- Duplicate Subtrees
- Construct Tree from Preorder Traversal
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- Construct a Full Binary Tree
- Check if two Nodes are Cousins
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- Vertical Width of a Binary Tree
- C++ Friend function
- C++ Generic sort
- Cat and Hat - Python
- Zero Converter - Python
- Swap Kth nodes from ends
- Add two numbers represented by Linked List
- Maximum sum of Non-adjacent nodes
- Mother Vertex
- Ceil in BST
- Count total set bits
- Gray to Binary equivalent
- Maximum AND Value
- Tower Of Hanoi
- Smallest Positive Missing Number
- Power Of Numbers
- Possible Words From Phone Digits
- Rotate and delete
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Maximum Product of Increasing Subsequence of Size 3
- Maximum Index
- Trapping Rain Water
- Stock buy and sell
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Unique BST's
- Count the number of possible triangles
- Triplet Sum in Array
- Number of pairs
- Possible paths between 2 vertices
- Level of Nodes
- Make Matrix Beautiful
- Boolean Matrix
- Spirally traversing a matrix
- Search in a sorted Matrix
- Distance of nearest cell having 1
- Unit Area of largest region of 1's
- Subarray range with given sum
- Subarrays with equal 1s and 0s
- Sorting Elements of an Array by Frequency
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Stock span problem
- Next Greater Element
- Infix to Postfix
- K Sized Subarray Maximum
- K largest elements
- Nearly sorted
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Largest number in K swaps
- Black and White
- Combination Sum
- Unique Subsets
- M-Coloring Problem
- Minimum Jumps
- Detect Cycle using DSU
- Ways to write n as sum
- Stickler Thief
- Ways to Reach the n'th Stair
- Count ways to N'th Stair(Order does not matter)
- Egg Dropping Puzzle
- Optimal Strategy For A Game
- Sum of all substrings of a number
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Sort an array according to the other
- Allocate Minimum Pages
- Preorder to PostOrder
- X Total Shapes
- Zero Sum Subarrays
- Find whether path exist
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Nth catalan number
- Rotten Oranges
- Steps by Knight
- Most frequent word in an array of strings
- Count subsequences of type a^i, b^j, c^k
- Maximize The Cut Segments
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Closest Three Sum
- Word Break
- Stock buy and sell II
- Generate Parentheses
- Word Search
- Word Boggle
- Prerequisite Tasks
- Find All Four Sum Numbers
- Excel Sheet | Part - 1
- Paths to reach origin
- Taking 1 out of 3 consecutives
- Missing And Repeating
- Complement
- Maximum Sub Array
- Maximum Index
- Number of subarrays with maximum values in given range
- Flip Bits
- Sum of Subarrays
- Equal Sum
- Top k numbers in a stream
- Large Factorial
- Longest Span in two Binary Arrays
- Maximize Number of 1's
- Max and Min Products
- Median of two sorted arrays
- Equivalent Sub-Arrays
- Mr. Modulo and Arrays
- Count Number
- Consecutive 1's not allowed
- Count Occurences of Anagrams
- Count of Subarrays
- Find the element that appears once
- Pythagorean Triplet
- Happiest Triplet
- Mr Modulo and Pairs
- Painting the Fence
- Sum of two elements with sum nearest to zero
- Smallest factorial number
- Sum of bit differences
- Sonam Bewafa asks questions
- Print Binary Tree levels in sorted order
- Count the Number of Full Binary Trees
- Maximum Intervals Overlap
- Minimums in Array
- Maximize The Array
- Largest Number formed from an Array
- Efficiently sorting numbers in range from 0 to n^2 - 1
- Marks of PCM
- Water Collection
- Alternate Vowel and Consonant String
- Add Binary Strings
- Super Primes
- Maximum Product Subarray
- Longest subarray with sum divisible by K
- Check if a string is repetition of its substring of k-length
- Sort the given array after applying the given equation
- Archana and her tricky string
- Row with max 1s
- Max value after m range operation
- Swapping pairs make sum equal
- Column name from a given column number
- Comment Removal
- Concatenation of Zig-Zag String in n Rows
- Design a tiny URL or URL shortener
- Substrings with K Distinct
- Count of Palindromic substrings in an Index range
- Palindrome SubStrings
- Form a palindrome
- Nuts and Bolts Problem
- Rotate a 2D array without using extra space
- Longest Subarray with Sum K
- Transform String
- Count the Reversals
- count special palindromic
- Number of positive integral solutions
- Cutting Binary String
- Sum of two large numbers
- Sick Pasha
- Equal 0, 1 and 2
- Beautiful SubSequence
- Factorials of large numbers
- Search Pattern (KMP-Algorithm)
- Find length of longest subsequence
- Maximum length Bitonic Subarray
- Shuffle integers
- Reverse each word in a given string
- Find the N-th character
- Length of the longest substring
- Remove leading zeros from an IP address
- The Tiny Miny
- Maximum Sum Path in Two Arrays
- k largest elements
- Sum of XOR of all pairs
- Find missing in second array
- Magnet Array Problem
- Longest Common Substring
- Smallest distinct window
- Longest common substring value of two numbers
- Count of substrings containing K ones
- Longest K unique characters substring
- Longest Palindrome in a String
- Look and Say Pattern
- Save Winterfell
- Minimum steps to get desired array
- Pass the semester
- Find the position
- Valid Expression
- Tic Tac Toe
- Integer to Words
- String Conversion
- K-th element of two Arrays
- Arranging the array
- String formation from substring
- Possible groups
- Longest Arithmetic Progression
- Count triplets with sum smaller than X
- Rod Cutting
- Save Gotham!
- Aditya and his building blocks
- K closest elements
- Number of pairs
- Fill array with 1's
- Subset with no pair sum divisible by K
- Smallest Subarray GCD
- Missing element of AP
- Minimum swaps and K together
- Maximize the sum of selected numbers from a sorted array to make it empty
- Smallest Absolute Difference
- LCS of three strings
- Longest Palindromic Subsequence
- Largest Sum Subarray of Size at least K
- Longest Common Increasing Subsequence
- Smallest Non-Zero Number
- Find the number of subarrays having even sum
- Find k-th character in string
- Longest Prefix Suffix
- Maximum difference of zeros and ones in binary string
- Equalize the Towers
- Number of palindromic strings
- Minimum sum
- Not a subset sum
- Build the smallest
- Subarray Inversions
- Minimize the Heights II
- Large Factorials
- Surpasser Count
- Transform to prime
- Rubik's Cube
- First and last occurrences of x
- Reaching the heights
- Construct binary palindrome by repeated appending and trimming
- Next higher number in one swap
- Next higher palindromic number using the same set of digits
- Smaller on Left
- Minimum Deletions
- A difference of values and indexes
- Maximum Product of Increasing Subsequence of Size 3
- Print N-bit binary numbers having more 1s than 0s
- Nine Divisors
- Valid Substring
- Find patterns
- Minimum number of deletions.
- Minimum Swaps for Bracket Balancing
- Permutations of a String
- Missing Intervals
- Print kth character
- Number following a pattern
- Previous number in one swap
- Challenge by Nikitasha
- Substring - Subsequence problem
- Find largest word in dictionary
- Circle of strings
- Rotate String
- Friends Pairing Problem
- Longest repeating and non-overlapping substring
- String Subsequence Game
- Special Numbers
- CamelCase Pattern Matching
- Sum-string
- Pallindrome Patterns
- Count divisors of product of array elements
- Maximum Sum Subsequence of length k
- Lexicographically smallest string
- Sum of Products
- Maximum XOR subset
- Count the subarrays having product less than k
- Unique Number II
- Bleak Numbers
- Queries for counts of multiples in an array
- Ways to sum to N
- Skip the work
- Maximum bitonic subarray sum
- Max possible amount
- Maximum calorie
- Modular Exponentiation for large numbers
- Edit Distance
- Game of XOR
- Largest prime factor
- 3 Divisors
- Maximum Tip Calculator
- Find the element at given index
- Min cut Square
- Modified Game of Nim
- Disarrangement of balls
- Minimum number of deletions and insertions
- Maximum sum increasing subsequence
- Minimum cost to fill given weight in a bag
- Coin Change (Count Ways)
- Sequence of Sequence
- Count of n digit numbers whose sum of digits equals to given sum
- Santa Banta
- Minimum steps to delete a string
- String Subsequence
- Minimum Time
- Mobile numeric keypad
- Modify array to maximize sum of adjacent differences
- Gold Mine Problem
- Non-decreasing subsequence
- Coin Change (Minimum Coins)
- Dice throw
- Number of subsequences in a string divisible by n
- Palindromic Strings
- Perfect Sum Problem
- Fibonacci Sum
- Smallest number
- Power Of 2 and Subsequences
- Dyck Path
- Kth Smallest Factor
- Firing employees
- Shreyansh and his bits
- Find the largest number
- Count ways to N'th Stair(Order does not matter)
- First Digit
- Find distinct elements
- Subset with sum divisible by m
- Knapsack with Duplicate Items
- Numbers with 0 as a digit
- Temple Offerings
- nCr
- Number of ways
- Count Integral Points
- Count of sum of consecutives
- Subsets with XOR value
- Maximum path sum in matrix
- Minimum steps to destination
- Special Keyboard
- Partition Equal Subset Sum
- XOR Game
- Longest Bitonic subsequence
- Min Coin
- Get Minimum Squares
- Maximum GCD Pair
- Part of it.
- Lucky alive person in a circle
- Handshakes
- Count possible ways to construct buildings
- Count distinct pairs with difference k
- Count digit groupings of a number
- Jumbled Strings
- Dimensions of Rectangle
- Probability of Knight
- Page Faults in LRU
- Array Pair Sum Divisibility Problem
- Digit multiplier
- Magic Triplets
- Brain Game
- Money Distributions
- Fill up buckets
- Matchsticks game
- Median in a row-wise sorted Matrix
- N trailing zeroes in factorials
- Killing Spree
- Subset Sums
- Unique partitions
- Prime Pair with Target Sum
- N Digit numbers with digits in increasing order
- Carmichael Numbers
- Square Numbers
- Count Numbers in Range
- Yes XOR No
- Fill the Tank
- Akku and Binary Numbers
- Number of paths
- Sisters and coins
- Nth Natural Number
- Knight Walk
- Stepping Numbers
- Permutation with Spaces
- Coins and Game
- Number of paths in a matrix with k coins
- Card Rotation
- Bell Numbers
- Game of Chocolates
- Find the last digit when factorial of A divides factorial of B
- LCM Triplet
- Pasha and Primes
- Count Total Setbits
- Sum of Query II
- Find Prime numbers in a range
- Nth digit in sequence
- Arrange Balls
- Power of Largest Prime
- Count Divisors of Factorial
- Jumping Numbers
- A Game of LCM
- Count in array
- Party in Town
- Game with String
- Two water Jug problem
- Count even length
- A Simple Fraction
- Numbers with alternative 1's
- Grouping Of Numbers
- Find the Safe Position
- Smith Number
- Cows of FooLand
- Count of AP Subsequences
- Count ways to increase LCS length of two strings by one
- Next Permutation
- Missing number in matrix
- Rank The Permutations
- Prime factorization and geek number
- Element left after performing alternate OR & XOR operation
- Smallest number on left
- Maximum sum of hour glass
- Geek and knots
- Total number of Equal Partition
- Nitika and her queries
- Filling Bucket
- Divisibility
- How Many X's?
- Large Product-2
- Series with largest GCD and sum equals to N
- Matrix Exponentiation
- Longest Repeating Subsequence
- Longest alternating subsequence
- Composite and Prime
- Finding Profession
- Left Rotate Matrix K times
- Let's Go Shopping!
- Decode the string
- Is Sudoku Valid
- Preorder Traversal and BST
- ThrowBall at Fair
- Total Decoding Messages
- Distributing Balls
- First non-repeating character in a stream
- Maximum Sub-String after at most K changes
- Big Numbers Series
- Count Divisors
- Mathematical manipulation
- Letters Collection
- Check If two Line segments Intersect
- 2D Hopscotch
- Buying Vegetables
- Villain Con
- Possible paths
- Segregate even and odd nodes in a Link List
- Print leaf nodes from preorder traversal of BST
- Geek collects the balls
- Number of Rectangles in a Circle
- Largest square formed in a matrix
- Pizza Mania
- Tricky Subset Problem
- Pyramid form
- Water Overflow
- Longest Perfect Piece
- Rat Maze With Multiple Jumps
- Integral Points Inside Triangle
- Kth largest element in a stream
- Easy Query
- Snake and Ladder Problem
- Geek and Strings
- Sum of Query I
- Pairs of Non Coinciding Points
- The Smurfs
- Divide and Subtract Game
- Satisfy the equation
- 7 Segment Display
- Product of Primes
- Transitive closure of a Graph
- Replace O's with X's
- nCr mod M | Part 2
- Two numbers with odd occurrences
- Mail System Design
- Find all distinct subset (or subsequence) sums
- Cost of Sweets
- Lots of Work
- Check Mirror in N-ary tree
- Your Social Network
- Queries on Strings
- Special Matrix
- Broken blocks
- Recurrence Matrix
- Factorial and numbers
- Leftmost Divisor
- Express as sum of power of natural numbers
- Count all Possible Path
- Find the string in grid
- Shortest Uncommon Subsequence
- Number of Palindromic paths in a Matrix
- Nodes at even distance
- The Infinite String
- Biconnected Graph
- Reverse Delete Algorithm for Minimum Spanning Tree
- Crazy Equations
- Help a Thief!!!
- Largest Divisibility Test
- Count the paths
- Floyd Warshall
- Negative weight cycle
- Flood fill Algorithm
- Form coils in a matrix
- Techfest and the Queue
- Largest subsquare surrounded by X
- Shortest Source to Destination Path
- Divisibility tree
- Base Equivalence
- Rahul and The Lift
- Maximum sum Rectangle
- Shortest Path between Cities
- Fun With Expresions
- Height Using Parent Array
- Reverse Spiral Form of Matrix
- Police and Thieves
- Geek in a Maze
- Geek and Number String
- Print the Sequence
- Save Your Life
- Image Multiplication
- Missing Point of a Parallelogram
- Huffman Encoding
- Hamiltonian Path
- Recursively remove all adjacent duplicates
- Magical Box
- Water Connection Problem
- Number of minimum picks to get 'k' pairs of socks from a drawer
- Spiral Matrix
- Coins of Geekland
- Valid Pair Sum
- Dam of Candies
- Transfiguration
- Repeated String Match
- Ruling Pair
- Count Triplets
- Restrictive Candy Crush
- Help Classmates
- Restricted Pacman
- Valentine Sum
- Lucy's Neighbours
- Spidey Sense
- Project Manager
- Water the plants
- Escape the Forbidden Forest
- Jump Game
- Maximum value of difference of a pair of elements and their Index
- Inorder Traversal (Iterative)
- Triplets with sum with given range
- Preorder traversal (Iterative)
- Postorder Traversal (Iterative)
- Subset Sum Problem
- Longest Palindromic Substring
- Form a palindrome
- Search Pattern (Z-algorithm)
- Search Pattern (Rabin-Karp Algorithm)
- All Palindromic Partitions
- Covid Spread
- 3 sum closest
- Bellman-Ford
- Player with max score
- Gray Code
- Subarrays with sum K
- Remove BST keys outside given range
- Partition a Linked List around a given value
- Minimum XOR value pair
- Searching an element in a sorted array (Ternary Search)
- Word Boggle - II
- Maximum XOR subarray
- Capacity To Ship Packages Within D Days
- Sort a 2D vector diagonally
- Coin Piles
- Rearrange characters
- Distribute N candies among K people
- Remove K Digits
- Substrings of length k with k-1 distinct elements
- Binary Searchable elements
- Clone a stack without using extra space
- Maximum XOR of two numbers in an array
- Count pairs in array divisible by K
- Construct list using given q XOR queries
- Number of Provinces
- Prefix match with other strings
- Binary Matrix with at most K 1s
- Maximum sum leaf to root path
- Find duplicate rows in a binary matrix
- Single valued subtree
- BST to max heap
- Maximum sum of elements not part of LIS
- BST to greater sum tree
- Find rectangle with corners as 1
- Paths from root with a specified sum
- Shortest Prime Path
- Shortest Prime Path
- Cousins of a given node
- Division without using multiplication, division and mod operator
- Insertion Sort for Singly Linked List
- Remove all occurences of duplicates in a linked list
- Minimize the Heights I
- Subsets
- Flatten binary tree to linked list
- Rank The Permutations
- Anti Diagonal Traversal of Matrix
- Design Browser History
- Design Twitter
- IPL 2021 - Match Day 1
- IPL 2021 - Match Day 2
- IPL 2021 - Match Day 3
- IPL 2021 - Match Day 4
- Neeman's Shoes
- Unique Number III
- All Unique Permutations of an array
- Course Schedule
- License Key Formatting
- Find and Replace in String
- Clone an Undirected Graph
- Min Cost Climbing Stairs
- Target Sum
- Minimum times A has to be repeated such that B is a substring of it
- Bitwise AND of the Array
- Overlapping Intervals
- Bitwise AND of the Array
- Remove and Reverse
- Buy and Sell a Share at most twice
- Find Kth permutation
- Maximum number of events that can be attended
- Split the binary string into substrings with equal number of 0s and 1s
- Longest Possible Route in a Matrix with Hurdles
- Find k-th smallest element in given n ranges
- Even Swap
- Reverse a Stack
- Number of pairs
- Farthest number
- Maximum product subset of an array
- Robots
- K-th Largest Sum Contiguous Subarray
- Node in subtree or not
- Hit most Balloons
- Maximum Meetings in One Room
- Enemy
- Find Maximum Equal sum of Three Stacks
- Buy Maximum Stocks if i stocks can be bought on i-th day
- Exactly one swap
- Maximum Winning score
- Compute Before Matrix
- Interleave the First Half of the Queue with Second Half
- Levels Of Game
- Smallest sum contiguous subarray
- Array Removals
- Max Sum without Adjacents 2
- Find shortest safe route in a matrix
- Minimum Cost to cut a board into squares
- Stack Permutations
- Largest subtree sum in a tree
- Remove Invalid Parentheses
- Calculate the coefficient
- Expression contains redundant bracket or not
- Assembly Line Scheduling
- Wine Buying and Selling
- Maximum trains for which stoppage can be provided
- Is it a tree ?
- Replace every element with the least greater element on its right
- Geek fight
- Special Keyboard 2
- Minimum time taken by each job to be completed given by a Directed Acyclic Graph
- Total Number Of Spanning Trees In A Graph
- Maximum selections
- LCP
- Next element with greater frequency
- Sum of nodes within k distance from target
- Minimum increment/decrement to make array non-Increasing
- Minimize Cash Flow
- Minimum edges
- Minimum Swaps
- Construct Binary Tree from String with bracket representation
- Number of Distinct Islands
- Shortest Distance in a Binary Maze
- Minimum Multiplications to reach End
- Number Of Enclaves
- Eventual Safe States
- City With the Smallest Number of Neighbors at a Threshold Distance
- Alex Travelling
- Number Of Islands
- Merging Details
- Number of Ways to Arrive at Destination
- Pattern
- Path With Minimum Effort
- Cheapest Flights Within K Stops
- Connecting the graph
- Shortest path in Undirected Graph
- Maximum Stone Removal
- Shortest path in Directed Acyclic Graph
- Maximum Frequency
- Majority Element II
- Sum of Beauty of All Substrings
- Koko Eating Bananas
- Search in Rotated Array 2
- Count Good numbers
- Fruit Into Baskets
- Longest Repeating Character Replacement
- Maximum Consecutive Ones
- Count Subarray with k odds
- Count Substring
- Binary subarray with sum
- Sum of subarray minimum
- Asteroid Collision
- Minimal Cost
- Geek's Training
- Grid Path 2
- Sum of subarray ranges
- Maximum point you can obtain from cards
- Subarrays with K Different Integers
- Buy Stock 2
- Buy Stock with Cooldown
- Combination Sum III
- Aggressive Cows
- Smallest Divisor
- Subset II
- Combination Sum II
- Check if there exists a subsequence with sum K
- Next Greater Element 2
- Ugly Number II
- Combination Sum II
- Shortest Path in Weighted undirected graph
- Prime Factorization using Sieve.
- Prefix to Infix Conversion
- Prefix to Postfix Conversion
- Word Search
- Minimum days to make M bouquets
- Generate all binary strings
- Delete all occurrences of a given key in a doubly linked list
- Postfix to Prefix Conversion
- Postfix to Infix Conversion
- Task Scheduler
- Hands of Straights
- Minimum Absolute Difference In BST
- Buy Stock with Transaction Fee
- Number of Longest Increasing Subsequence
- Lemonade Change
- Maximum Sum Combination
- Non-overlapping Intervals
- Stickler Thief II
- Replace elements by its rank in the array
- Convert Min Heap to Max Heap
- Insert Interval
- Shortest Job first
- Implementation of Priority Queue using Binary Heap
- Partition Array for Maximum Sum
- Count Square Submatrices with All Ones
- Introduction to DP
- Longest String Chain
- Printing Longest Increasing Subsequence
- Bit's basic operations
- Partitions with Given Difference
- Index of the First Occurrence of pattern in a text
- Floor in BST
- Triangle Path Sum
- Largest Divisible Subset
- GCD Array
- Minimize number of Students to be removed
- Maximum Value
- Shortest Prime Path
- Flattening a Linked List
- Next Greater Element
- Carpet into Box
- Minimum X (xor) A
- Find minimum number of Laptops required
- Geeks And The String
- Tree Transformation
- Find the longest string
- Maximum Profit By Choosing A Subset Of Intervals
- Minimum repeat to make substring
- Distinct Coloring
- Intersection Point in Y Shaped Linked Lists
- BST Downward Traversal
- Length of the longest subarray with positive product
- Maximum Bipartite Matching
- Minimum Days
- Prime List
- Walls Coloring
- Water the plants
- Geeks Island
- Connect Nodes at Same Level
- Unique Paths in a Grid
- Valid Compressed String
- Fill the Matrix
- Number of Good Components
- Optimal Array
- Best Node
- Update Queries
- Good Stones
- Maximum Intersecting Lines
- String rp or pr
- Knight in Geekland
- Shy Geek
- Count Special Numbers
- Minimum Steps Required
- Minimum Platforms 2
- Count Cyclic Paths
- Maximum Triplet product
- Second smallest number
- Special Palindrome Substrings
- Maximum Possible Value
- Find anagrams in linked list
- Yet another query problem
- Geek hates too many 1s
- Maximum Length
- Remove the balls
- Unequal Arrays
- Job Sequencing Problem
- Bheem Wants Ladoos
- Prefix Suffix String
- Smaller Sum
- Shortest XY distance in Grid
- BST Maximum Difference
- Nearest smaller tower
- Another Coin Change Problem
- Geek's Village and Wells
- Find Number
- Max Coins
- Good Subtrees
- Subtree In N-ary Tree
- Easy Task
- Add Minimum Characters
- Maximum subset sum
- Palindrome with minimum sum
- Count Total Setbits
- Tree Transformation
- Construct a Full Binary Tree
- Modify Linked List-1
- Find Kth permutation
- Fraction pairs with sum 1
- Shortest Subarray with Sum K
- New Year Resolution
- Grinding Geek
- Flatten BST to sorted list
- Minimize the Difference
- Pairs violating the BST property
- Kth common ancestor in BST
- Maximum Skill 2
- Kth Missing Positive Number in a Sorted Array
- Count Subarrays with given XOR
- Set Matrix Zeroes
- Minimum cost to connect all houses in a city
- Meeting Rooms
- Split array in three equal sum subarrays
- Search in an almost Sorted Array
- Find H-Index
- Longest Subarray with Majority Greater than K
- Count all triplets with given sum in sorted array
- Implement Pow
- K Closest Points to Origin
- Longest Bounded-Difference Subarray
- Lexicographically Largest String After K Deletions
- Group Balls by Sequence
- Print Linked List elements
- Count Linked List Nodes
- Node at a given index in linked list
- Delete node in Doubly Linked List
- Size of Binary Tree
- Inorder Traversal
- Count Leaves in Binary Tree
- Check If Circular Linked List
- Postorder Traversal
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using Linked List
- Implement Queue using array
- Doubly linked list Insertion at given position
- Binary Search
- Replace all 0's with 5
- Count zeros in a sorted matrix
- Third largest element
- Convert to Roman No
- Preorder Traversal
- Implement strstr
- Search a node in BST
- Smallest divisible number
- Remainder with 7
- Operating an array
- Linked List Insertion
- Minimum element in BST
- Anagram of String
- Is Linked List Length Even?
- Delete Alternate Nodes
- Identical Linked Lists
- Find the Sum of Last N nodes of the Linked List
- Find n/k th node in Linked list
- Maximum in Struct Array
- Queue Reversal
- Triplet Family
- Sum of Binary Tree
- Insert in Middle of Linked List
- longest substring containing '1'
- Product of array elements
- Start Coding
- Bit Difference
- Number is sparse or not
- Power of 2
- Reverse array in groups
- Search an Element in an array
- Searching an element in a sorted array
- Binary Array Sorting
- Print Matrix in snake Pattern
- Check if a string is Isogram or not
- Binary String
- Check if strings are rotations of each other or not
- Maximum Occuring Character
- Remove common characters and concatenate
- Sum of numbers in string
- Reverse a String
- Union of two arrays
- Check if two arrays are equal or not
- Print first n Fibonacci Numbers
- C++ Hello World
- Maximize sum(arr[i]*i) of an Array
- Rearranging array
- Find the closest number
- Searching a number
- Missing number
- Balanced Array
- Sort The Array
- Alternative Sorting
- Maximum product of two numbers
- Check for subsequence
- Remove Consecutive Characters
- Sort in specific order
- Fighting the darkness
- Greater on right side
- Immediate Smaller Element
- Uncommon characters
- Quick Left Rotation
- Convert array into Zig-Zag fashion
- Repeated Character
- Index of first 1 in a sorted array of 0s and 1s
- Missing number in shuffled array
- Product of maximum in first array and minimum in second
- Elements in the Range
- Last index of One
- Largest Element in Array
- Cyclically rotate an array by one
- Print an array in Pendulum Arrangement
- Inverse Permutation
- Game with nos
- Play With OR
- First element to occur k times
- Exceptionally odd
- Ishaan Loves Chocolates
- Rotating an Array
- Remove Duplicates from unsorted array
- Find the smallest and second smallest element in an array
- Min and Max in Array
- Multiply left and right array sum.
- Print first letter of every word in the string
- Remove character
- Binary representation of next number
- Difference between highest and lowest occurrence
- GCD of Array
- Minimum product pair
- Find unique element
- Check if a number is power of another number
- Find position of set bit
- Set kth bit
- Find the fine
- LCM And GCD
- Maximum money
- Leap Year
- Factorial
- Binary number to decimal number
- Prime Number
- Closest Number
- Angle between hour and minute hand
- Sum of first n terms
- Shortest path from 1 to n
- Sieve of Eratosthenes
- Ways To Tile A Floor
- Count Squares
- Middle of Three
- Print the Kth Digit
- Sorted matrix
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