muskangupta955
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319 submissions in current year
SCHOOL (3)
BASIC (39)
EASY (253)
MEDIUM (409)
HARD (68)
- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- Clone List with Next and Random
- Wildcard Pattern Matching
- Subtraction in Linked List
- LRU Cache
- AVL Tree Insertion
- Merge two BST 's
- Alien Dictionary
- Smallest range in K lists
- Fixing Two nodes of a BST
- 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
- Minimum Cost Path
- Median of 2 Sorted Arrays of Different Sizes
- Stock Buy and Sell – Multiple Transaction Allowed
- Burning Tree
- Count Pairs in an Array
- Palindrome SubStrings
- Count Smaller elements
- Longest Prefix Suffix
- Wildcard string matching
- Circle of strings
- Longest repeating and non-overlapping substring
- Sum-string
- Sub-arrays with equal number of occurences
- Edit Distance
- Minimum Points To Reach Destination
- Minimum sum partition
- Palindromic Partitioning
- Stock Buy and Sell – Max K Transactions Allowed
- Matrix Chain Multiplication
- Strictly Increasing Array
- Median in a row-wise sorted Matrix
- The Palindrome Pattern
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Longest valid Parentheses
- Possible Paths in a Tree
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Rohan's Love for Matrix
- Articulation Point - II
- Maximum sum Rectangle
- Find all Critical Connections in the Graph
- Split Array Largest Sum
- Kth Smallest Number in Multiplication Table
- Stock Buy and Sell – Max 2 Transactions Allowed
- Min Chars to Add for Palindrome
- Longest Path in a Directed Acyclic Graph
- Maximum Connected group
- Aggressive Cows
- Minimize Max Distance to Gas Station
- Count Reverse Pairs
- Account Merge
- Max min Height
- Meeting Rooms III
- Minimum Weight Cycle
- Count the Coprimes
- Longest Periodic Proper Prefix
- Maximum Non-Overlapping Odd Palindrome Sum
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Add 1 to a Linked List Number
- Detect Loop in linked list
- Quick Sort on Linked List
- Insert in Sorted Circular Linked List
- Merge Sort
- Quick Sort
- Construct Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Merge two sorted linked lists
- 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
- Directed Graph Cycle
- Undirected Graph Cycle
- Lowest Common Ancestor in a Binary Tree
- Min distance between two given nodes of a Binary Tree
- Max sum path in two arrays
- The Celebrity Problem
- Largest subarray with 0 sum
- 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
- Check if subtree
- Kth element in Matrix
- Is Binary Tree Heap
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Distinct occurrences
- Max length chain
- Minimum Spanning Tree
- Additive sequence
- Largest BST
- Sorted subsequence of size 3
- Count Palindromic Subsequences
- Multiply two strings
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Strongly Connected Components (Kosaraju's Algo)
- Rat in a Maze Problem - I
- Bipartite Graph
- BST with Dead End
- Root to leaf paths sum
- Bridge edge in a graph
- Find triplets with zero sum
- Sort a stack
- Duplicate subtree in Binary Tree
- Top View of Binary Tree
- k-th Smallest in BST
- Peak element
- Merge Sort for Linked List
- Euler Circuit in an Undirected Graph
- Merge Sort on Doubly Linked List
- Ancestors in Binary Tree
- Pair Sum in BST
- Root to Leaf Paths
- Populate Inorder Successor for all nodes
- XOR Linked List
- Counting elements in two arrays
- Linked List that is Sorted Alternatingly
- K Sum Paths
- Construct Tree from Inorder & Preorder
- Arrange Consonants and Vowels
- Count the nodes at distance K from leaf
- Vertical sum
- Insert in Sorted way in a Sorted DLL
- Check if Tree is Isomorphic
- Maximum path sum from any node
- Predecessor and Successor
- Children Sum in a Binary Tree
- Diagonal sum in binary tree
- Deletion and Reverse in Circular Linked List
- Normal BST to Balanced BST
- Duplicate Subtrees
- Construct Tree from Preorder Traversal
- Sum of nodes on the longest path
- ZigZag Tree Traversal
- Vertical Width of a Binary Tree
- Maximum sum of Non-adjacent nodes
- Ceil in BST
- Gray to Binary equivalent
- Tower Of Hanoi
- Smallest Positive Missing
- Power Of Numbers
- Maximum occured integer
- Rotate and delete
- Rearrange Array Alternately
- Maximum Index
- Trapping Rain Water
- Stock buy and sell
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Two Repeated Elements
- Union of Two Sorted Arrays
- Indexes of Subarray Sum
- Count the number of possible triangles
- Sort by Absolute Difference
- Triplet Sum in Array
- Number of pairs
- Make Matrix Beautiful
- Spirally traversing a matrix
- Search in a sorted Matrix
- Distance of nearest cell having 1
- Subarray with 0 sum
- Subarray range with given sum
- Sorting Elements of an Array by Frequency
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Evaluation of Postfix Expression
- Stock span problem
- Next Greater Element
- Infix to Postfix
- K Sized Subarray Maximum
- Nearly sorted
- Activity Selection
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Largest number in K swaps
- M-Coloring Problem
- Minimum Jumps
- Stickler Thief
- Ways to Reach the n'th Stair
- 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
- Number of Unique Paths
- Sort according to an Array
- Allocate Minimum Pages
- Zero Sum Subarrays
- Find whether path exist
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Rotten Oranges
- Steps by Knight
- Maximize The Cut Segments
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Radix Sort
- Closest Three Sum
- Word Break
- Word Search
- Prerequisite Tasks
- Find All Four Sum Numbers
- Sort an array of 0s, 1s and 2s
- Paths to reach origin
- Missing And Repeating
- Pascal Triangle
- Maximum Index
- Sum of Subarrays
- Longest Span in two Binary Arrays
- Median of two sorted arrays
- Pythagorean Triplet
- Painting the Fence
- Search in Rotated Sorted Array
- Sum of bit differences
- Max Score from Subarray Mins
- Form the Largest Number
- Add Binary Strings
- Maximum Product Subarray
- Sort the given array after applying the given equation
- Row with max 1s
- Swapping pairs make sum equal
- Check if frequencies can be equal
- Substrings with K Distinct
- Palindrome SubStrings
- Form a palindrome
- Nuts and Bolts Problem
- Longest Subarray with Sum K
- Transform String
- Count the Reversals
- Cutting Binary String
- Sum of two large numbers
- Search Pattern (KMP-Algorithm)
- Number of occurrence
- Find the N-th character
- Length of the longest substring
- k largest elements
- Find missing in second array
- Longest Common Substring
- Smallest distinct window
- Longest Substring with K Uniques
- Longest Palindrome in a String
- Look and Say Pattern
- K-th element of two Arrays
- Rod Cutting
- K closest elements
- Missing element of AP
- Minimum swaps and K together
- LCS of three strings
- Longest Palindromic Subsequence
- First negative in every window of size k
- Equalize the Towers
- Minimum sum
- Not a subset sum
- Minimize the Heights II
- First and Last Occurrences
- Minimum Deletions
- Print N-bit binary numbers having more 1s than 0s
- Nine Divisors
- Valid Substring
- Shop in Candy Store
- Permutations of a String
- Friends Pairing Problem
- Sum of Products
- Unique Number II
- Modular Exponentiation for large numbers
- Maximum Tip Calculator
- Disarrangement of balls
- Minimum number of deletions and insertions
- Max Sum Increasing Subsequence
- Minimum cost to fill given weight in a bag
- Coin Change (Count Ways)
- String Subsequence
- Mobile numeric keypad
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Dice throw
- Perfect Sum Problem
- Smallest number
- Trail of ones
- Longest subsequence-1
- Power Set
- Count ways to N'th Stair(Order does not matter)
- Knapsack with Duplicate Items
- nCr
- Geek and its Game of Coins
- Maximum path sum in matrix
- Minimum steps to destination
- Partition Equal Subset Sum
- Count digit groupings of a number
- Array Pair Sum Divisibility Problem
- Subset Sums
- Prime Pair with Target Sum
- Nth Natural Number
- Number of paths in a matrix with k coins
- LCM Triplet
- Game with String
- Next Permutation
- Smallest number on left
- Maximum sum of hour glass
- Power of k in factorial of n
- Longest Repeating Subsequence
- Longest alternating subsequence
- Left Rotate Matrix K times
- Decode the string
- Total Decoding Messages
- First non-repeating character in a stream
- Check If two Line segments Intersect
- Segregate even and odd nodes in a Link List
- Print leaf nodes from preorder traversal of BST
- Number of Rectangles in a Circle
- Largest square formed in a matrix
- Integral Points Inside Triangle
- Check Mirror in N-ary tree
- Count all Possible Path
- Find the string in grid
- Count the paths
- Floyd Warshall
- Negative weight cycle
- Flood fill Algorithm
- Largest subsquare surrounded by X
- Divisibility tree
- Police and Thieves
- Recursively remove all adjacent duplicates
- Help Classmates
- Jump Game
- Subset Sum Problem
- Search Pattern (Rabin-Karp Algorithm)
- Find all possible palindromic partitions of a String
- Bellman-Ford
- Subarrays with sum K
- Coin Piles
- Rearrange characters
- Remove K Digits
- Substrings of length k with k-1 distinct elements
- Maximum XOR of two numbers in an array
- Construct list using given q XOR queries
- Number of Provinces
- Find duplicate rows in a binary matrix
- Maximum sum of elements not part of LIS
- Find rectangle with corners as 1
- Shortest Prime Path
- Remove all occurences of duplicates in a linked list
- Minimize the Heights I
- Unique Number III
- Course Schedule
- Clone an Undirected Graph
- Min Cost Climbing Stairs
- Overlapping Intervals
- Buy and Sell a Share at most twice
- Maximum product subset of an array
- K-th Largest Sum Contiguous Subarray
- Find Maximum Equal sum of Three Stacks
- Exactly one swap
- Smallest sum contiguous subarray
- Array Removals
- Find shortest safe route in a matrix
- Stack Permutations
- Calculate the coefficient
- Assembly Line Scheduling
- Check if a given graph is tree or not
- Replace every element with the least greater element on its right
- Minimum time taken by each job to be completed given by a Directed Acyclic Graph
- Next element with greater frequency
- City With the Smallest Number of Neighbors at a Threshold Distance
- Path With Minimum Effort
- Cheapest Flights Within K Stops
- Shortest path in Undirected Graph
- Shortest path in Directed Acyclic Graph
- Majority Element II
- Koko Eating Bananas
- Longest subarray with Atmost two distinct integers
- Sum of subarray minimum
- Minimal Cost
- Geek's Training
- Smallest Divisor
- Combination Sum II
- Shortest Path in Weighted undirected graph
- Generate all binary strings
- Delete all occurrences of a given key in a doubly linked list
- Postfix to Infix Conversion
- Task Scheduler
- Minimum Absolute Difference In BST
- Maximum Sum Combination
- Non-overlapping Intervals
- Stickler Thief II
- Insert Interval
- Introduction to DP
- Longest String Chain
- Partitions with Given Difference
- Floor in BST
- Largest Divisible Subset
- Make array elements unique
- Next Greater Element in Circular Array
- Find the longest string
- Minimum repeat to make substring
- Prime List
- Water the plants
- Unique Paths in a Grid
- Number of Good Components
- Remove the balls
- Powerful Integer
- Flatten BST to sorted list
- Last Fairy Standing
- Minimize the Difference
- Pairs violating the BST property
- Kth common ancestor in BST
- Maximum Doublet XOR
- Strong Indices
- Kth Missing Positive Number in a Sorted Array
- Count Subarrays with given XOR
- Set Matrix Zeros
- Minimum cost to connect all houses in a city
- Meeting Rooms
- Find All Triplets with Zero Sum
- Split array in three equal sum subarrays
- Last Moment Before All Ants Fall Out
- Search in an almost Sorted Array
- Find H-Index
- Minimum Time to Burst Balloons
- Count Pairs
- Longest Subarray with Majority Greater than K
- Count all triplets with given sum in sorted array
- Balancing Consonants and Vowels Ratio
- Implement Pow
- Subarrays With At Most K Distinct Integers
- K Closest Points to Origin
- Longest Bounded-Difference Subarray
- The Multiplication Game
- Beautiful Matrix II
- Minimize SubArray Sum
- Make All Zero
- Divisible by 13
- Lexicographically Largest String After K Deletions
- Group Balls by Sequence
- Count Unique Vowel Strings
- Count Numbers Containing Specific Digits
- ASCII Range Sum
- 2D Difference Array
- Difference Check
- Farthest Smaller Right
- Maximize the minimum difference between k elements
- Search in fully rotated sorted 2D matrix
- Reverse a linked list
- Occurence of an integer in 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
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Sorted insert for circular linked list
- Delete node in Doubly Linked List
- Inorder Traversal
- Reverse a Doubly Linked List
- Count BST nodes that lie in a given range
- Bubble Sort
- Selection Sort
- Insertion Sort
- Check for BST
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Delete without head pointer
- Height of Binary Tree
- Balanced Tree Check
- 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 Sorted Linked Lists
- Find Transition Point
- Remove Duplicates from a Sorted Linked List
- 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
- Largest subarray of 0's and 1's
- Remove duplicate elements from sorted Array
- Remove duplicates in array
- Remove every kth node
- Check if all leaves are at same level
- Multiply two linked lists
- You and your books
- Max distance between same elements
- Print matrix in diagonal pattern
- Delete a Node in Single Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Find duplicates in an array
- Count distinct elements in every window
- Three way partitioning
- Level order traversal
- Index of an Extra Element
- Disjoint set (Union-Find)
- Split Linked List Alternatingly
- Sum of leaf nodes in BST
- More than n/k Occurrences
- Counting Sort
- Reverse a string using Stack
- Symmetric Tree
- Delete Alternate Nodes
- Find the Sum of Last N nodes of the Linked List
- Count Pairs whose sum is equal to X
- Find length of Loop
- Linked List Matrix
- Queue Reversal
- Reverse First K elements of Queue
- Remove Half Nodes
- Closest Neighbour in BST
- Delete middle element of a stack
- Swap the array elements
- Xoring and Clearing
- Reverse an Array
- K-th Bit is Set or Not
- Power of 2
- Wave Array
- Frequencies of Limited Range Array Elements
- Equilibrium Point
- Array Leaders
- Rotate Array
- Floor in a Sorted Array
- Roof Top
- Print adjacency list
- Rotate by 90 degree
- Anagram
- String Rotated by 2 Places
- Strings Rotations of Each Other
- Isomorphic Strings
- Reverse Words
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Evaluation of Postfix Expression
- Minimum Cost of ropes
- N meetings in one room
- Reach a given score
- Count ways to N'th Stair
- First Repeating Element
- Union of Arrays with Duplicates
- Missing in Array
- Product array puzzle
- Roman Number to Integer
- Intersection of two arrays
- Sort 0s, 1s and 2s
- Maximize Array Value After Rearrangement
- Count the elements
- Rotation
- Find the closest number
- Pairs with certain difference
- Common in 3 Sorted Arrays
- 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
- Min sum formed by digits
- Minimize the sum of product
- Chocolate Distribution Problem
- Count pairs Sum in matrices
- Find Pair Given Difference
- Pairs with difference k
- Swap and Maximize
- Bitonic Point
- Smallest subarray with sum greater than x
- Single Number
- Alternate positive and negative numbers
- Remaining String
- Kth distance
- Palindrome Sentence
- Remove Duplicates
- Nearest multiple of 10
- Reorganize The Array
- Sum of two numbers represented as arrays
- Facing the sun
- Second Largest
- Convert array into Zig-Zag fashion
- Two Sum - Pair with Given Sum
- Second most repeated string in a sequence
- Number of occurrence
- K-Pangrams
- Does array represent Heap
- Modify the Array
- Check if array is sorted
- Sum Pair closest to target
- Longest Common Prefix of Strings
- Longest substring with distinct characters
- Min Number of Flips
- Substrings with same first and last characters
- Count pairs with given sum
- Segregate 0s and 1s
- Play With OR
- Tywin's War Strategy
- First element to occur k times
- Merge two binary Max heaps
- Palindrome String
- Total count
- Search array with adjacent diff at most k
- Pair with given sum in a sorted array
- Print Bracket Number
- Odd Even Problem
- Binary representation of next number
- Padovan Sequence
- Extract the Number from the String
- Check if a number is divisible by 8
- Find the Highest number
- Armstrong Numbers
- Reverse Bits
- Nth Fibonacci Number
- Swap two nibbles in a byte
- Count Digits
- Maximum Sum Problem
- Party of Couples
- Maximize dot product
- Shortest path from 1 to n
- Sum of all divisors from 1 to n
- Count numbers containing 4
- Trail of ones
- K-Palindrome
- Minimum number of Coins
- Minimum Cost To Make Two Strings Identical
- Largest number possible
- Recamans sequence
- Compare two fractions
- Trailing zeroes in factorial
- Reverse Coding
- BBT counter
- Find Nth root of M
- Recursive sequence
- Juggler Sequence
- Summed Matrix
- Arithmetic Number
- Row with minimum number of 1's
- Coverage of all Zeros in a Binary Matrix
- Exit Point in a Matrix
- Array to BST
- Print Diagonally
- Find maximum volume of a cuboid
- Minimum Sum of Absolute Differences of Pairs
- Move Last Element to Front of a Linked List
- Insert an Element at the Bottom of a Stack
- Find pairs with given sum in doubly linked list
- Sort a k sorted doubly linked list
- Fibonacci series up to Nth term
- Geek Jump
- Stock Buy and Sell – Max one Transaction Allowed
- Divisor Game
- Search in Linked List
- Remove duplicates from a sorted doubly linked list
- Introduction to Linked List
- Introduction to Doubly Linked List
- Graph and Vertices
- Find the first node of loop in linked list
- String Reboot
- Character Matrix Conundrum
- Prefix Distinct
- Find Mode in BST
- Two Smallests in Every Subarray
- Split an array into two equal Sum subarrays
- Largest Pair Sum
- Validate distribution
- Find Smallest
- Geek String
- 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
- Implement Lower Bound
- Find Only Repetitive Element from 1 to n-1
- Max x
- Number Difference
- Longest Substring
- Minimum Steps to Target Coordinate
- Absolute Difference Array
- Min Operations
- Min Operations for Full 1s Row & Column
- Maximum Score
- Minimum Cost to buy Candies
- Beautiful Matrix I
- Count Triplets
- Lexicographically Smallest String Cost
- Unique Number I
- Different Modulo Subsequence
- Maximum Matching Pair
- Print Linked List elements
- Count Linked List Nodes
- Inorder Traversal
- Check If Circular Linked List
- Doubly linked list Insertion at given position
- Binary Search
- Sum Except First and Last
- Palindromic Array
- Peak element
- Linked List Insertion
- Minimum element in BST
- Is Linked List Length Even?
- Identical Linked Lists
- Triplet Family
- Reverse array in groups
- Search an Element in an array
- Searching an element in a sorted array
- Reverse a String
- Union of two arrays
- Check if two arrays are equal or not
- Print first n Fibonacci Numbers
- Permutations in array
- Alternative Sorting
- Value equal to index value
- Remove Consecutive Characters
- Largest Element in Array
- Rotate Array by One
- Array Subset
- Min and Max in Array
- Ceil The Floor
- LCM And GCD
- Factorial
- Prime Number
- Time Travel
- Who has the majority?
- Geekland Elections
- Maximize Expression
- Bit Maximization
- Difference Sum
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