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kishankaushik
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BASIC (7)
EASY (128)
MEDIUM (228)
HARD (58)
- Reverse alternate nodes in Link List
- Merge 2 sorted linked list in reverse order
- Insert in Sorted Circular Linked List
- Intersection in Y Shaped Lists
- Absolute List Sorting
- Max sum path in two arrays
- Find the number of islands
- Wildcard Pattern Matching
- Sorted subsequence of size 3
- Multiply two strings
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Print matrix in diagonal pattern
- BST with Dead End
- Merge two BST 's
- Root to leaf paths sum
- Duplicate Subtree
- k-th Smallest in BST
- Euler circuit and Path
- Binary Tree to CDLL
- XOR Linked List
- K Sum Paths
- Leftmost and rightmost nodes of binary tree
- Count the nodes at distance K from leaf
- Isomorphic Trees
- Children Sum in a Binary Tree
- Normal BST to Balanced BST
- Mother Vertex
- Rotate and delete
- Rearrange Array Alternately
- Maximum Index
- Rotate Array
- Kadane's Algorithm
- Indexes of Subarray Sum
- Number of pairs
- Make Matrix Beautiful
- Boolean Matrix
- Determinant of a Matrix
- Distance of nearest cell having 1
- Subarray with 0 sum
- Subarray range with given sum
- Sort Elements by Decreasing Frequency
- Case-specific Sorting of Strings
- K Sized Subarray Maximum
- Fractional Knapsack
- Black and White
- Minimum Jumps
- Detect Cycle using DSU
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Zero Sum Subarrays
- Implement Trie
- Shortest Common Supersequence
- Nth Catalan Number
- Container With Most Water
- Rotate by 90 degree
- Top K Frequent in Array
- Word Break
- 4 Sum - All Quadruples
- Sort 0s, 1s and 2s
- Complement
- Maximum Sub Array
- Pascal Triangle
- Number of subarrays with maximum values in given range
- Top k numbers in a stream
- Pythagorean Triplet
- Painting the Fence
- Sum of bit differences
- Count Full Binary Trees
- Form the Largest Number
- Alternate Vowel and Consonant String
- Add Binary Strings
- Longest subarray with sum divisible by K
- Check if a string is repetition of its substring of k-length
- Check if frequencies can be equal
- Column name from a given column number
- Substrings with K Distinct
- Max Sum without Adjacents
- Find the N-th character
- Sum of XOR of all pairs
- Longest Substring with K Uniques
- LCS of three strings
- Largest Sum Subarray of Size at least K
- Not a subset sum
- Build the smallest
- Minimize the Heights II
- Transform to prime
- First and Last Occurrences
- Minimum Deletions
- A difference of values and indexes
- Find patterns
- Bleak Numbers
- Game of XOR
- 3 Divisors
- Modified Game of Nim
- Minimum number of deletions and insertions
- Max Sum Increasing Subsequence
- Sequence of Sequence
- Gold Mine Problem
- Perfect Sum Problem
- Shreyansh and his bits
- K-Palindrome
- Power Set
- Count ways to N'th Stair(Order does not matter)
- Partition Equal Subset Sum
- Longest Bitonic subsequence
- Count possible ways to construct buildings
- Count digit groupings of a number
- Array Pair Sum Divisibility Problem
- Magic Triplets
- Akku and Binary Numbers
- Number of paths
- Nth Natural Number
- Number of paths in a matrix with k coins
- LCM Triplet
- A Game of LCM
- Game with String
- Count even length
- Smith Number
- Missing number in matrix
- How Many X's?
- Total Decoding Messages
- 2D Hopscotch
- Replace O's with X's
- Traverse All Edges And Vertices
- Find the string in grid
- Techfest and the Queue
- Largest subsquare surrounded by X
- Remove K Digits
- Find duplicate rows in a binary matrix
- Single valued subtree
- Paths from root with a specified sum
- Shortest Prime Path
- Insertion Sort for Singly Linked List
- Anti Diagonal Traversal of Matrix
- Unique Number III
- All Unique Permutations of an array
- Course Schedule
- Clone an Undirected Graph
- Remove and Reverse
- Even Swap
- Maximum Meetings in One Room
- Buy Maximum Stocks
- Largest subtree sum in a tree
- Wine Buying and Selling
- Graph is Tree or Not
- Construct Binary Tree from String with bracket representation
- Check if all levels of two trees are anagrams or not
- Minimum Multiplications to reach End
- City With the Smallest Number of Neighbors at a Threshold Distance
- Alex Travelling
- Shortest Path in Undirected Graph
- Majority Element II
- Asteroid Collision
- Minimal Cost
- Aggressive Cows
- Maximum Sum Combination
- Floor in BST
- GCD Array
- Minimize number of Students to be removed
- Maximum Value
- Shortest Prime Path
- Flattening a Linked List
- Absolute difference divisible by K
- Make array elements unique
- Next Greater Element in Circular Array
- Carpet into Box
- Minimum X (xor) A
- Find minimum number of Laptops required
- Geeks And The String
- Find the longest string
- Maximum Profit By Choosing A Subset Of Intervals
- Minimum repeat to make substring
- Paint N House
- Max Sum without Adjacents
- Intersection Point in Y Shaped Linked Lists
- BST Downward Traversal
- Length of the longest subarray with positive product
- Count number of free cell
- Maximum Bipartite Matching
- Minimum Days
- Prime List
- Walls Coloring
- Water the plants
- Geeks Island
- Apple Sequences
- 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
- Count Cyclic Paths
- Maximum Triplet product
- Second smallest number
- Special Palindrome Substrings
- Maximum Possible Value
- Distinct Difference
- 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
- Smaller Sum
- Shortest XY distance in Grid
- BST Maximum Difference
- Nearest smaller tower
- Geek's Village and Wells
- Find Number
- Subtree In N-ary Tree
- Add Minimum Characters
- New Year Resolution
- Grinding Geek
- Flatten BST to sorted list
- Split array in three equal sum subarrays
- Frequency in a Linked List
- Pairwise swap elements of a linked list
- Delete nodes having greater value on right
- Reverse a Doubly Linked List
- Mirror Tree
- Balanced Tree Check
- Middle of a Linked List
- Left View of Binary Tree
- Decimal Equivalent of Binary Linked List
- Intersection Sorted Linked Lists
- Find Transition Point
- Remove Duplicates from a Sorted Linked List
- Insert a node in a BST
- Identical Trees
- Remove duplicates in array
- Binary Tree to BST
- Leaves at Same Level or Not
- Multiply two linked lists
- Max distance between same elements
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Array Duplicates
- Insert in a Sorted List
- Sum of leaf nodes in BST
- More than n/k Occurrences
- Symmetric Tree
- Delete Alternate Nodes
- Find the Sum of Last N nodes of the Linked List
- Find length of Loop
- Leaf under budget
- Linked List Matrix
- Reverse first K of a Queue
- Brothers From Different Roots
- Swap the array elements
- Predict the Column
- Reverse an Array
- Rightmost different bit
- Check K-th Bit
- Power of 2
- Wave Array
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Roof Top
- Print adjacency list
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Winner of an election
- String Rotated by 2 Places
- Strings Rotations of Each Other
- Isomorphic Strings
- Reverse Words
- Panagram Checking
- Parenthesis Checker
- Minimum Cost of ropes
- Count number of hops
- Missing in Array
- Missing And Repeating
- Move All Zeroes to End
- Count pairs Sum in matrices
- Pairs with difference k
- Swap and Maximize
- Single Number
- Alternate Positive Negative
- Reorganize The Array
- Facing the sun
- Number of occurrence
- Does array represent Heap
- Convert an array to reduced form
- String's Count
- Play With OR
- Find the closest pair from two arrays
- Palindrome String
- Total count
- Balanced string
- Divisibility by 8
- Max Sum Subarray of size K
- Shortest path from 1 to n
- Reach the Nth point
- Number Of Open Doors
- Break a number
- Perfect Numbers
- Largest number possible
- Recamans sequence
- Form a number divisible by 3 using array digits
- Recursive sequence
- Arithmetic Number
- Surround the 1's
- Letters Collection
- Print Pattern
- Maximum Sum LCM
- Check if it is possible to convert one string into another with given constraints
- Earthquake and the Paint Shop
- Sum of dependencies in a graph
- Count the Substrings
- Smallest window containing 0, 1 and 2
- Fibonacci series up to Nth term
- Minimize the sum
- Last modified ball
- Transform to Sum Tree
- Parent of Max GCD Siblings in a Binary Tree
- Find the first node of loop in linked list
- Maximum Weight Node
- Type it!
- Min operations
- Last cell in a Matrix
- Balloon Everywhere
- Reverse both parts
- Cutting Rectangles
- Frogs and Jumps
- Make Array Elements Equal
- Equal Left and Right Subarray Sum
- Make the array beautiful
- Is it Fibonacci
- Taxi Booking
- Max Level Sum in Binary Tree
- Binary matrix having maximum number of 1s
- Number of Subarrays of 0's
- Minimum Number
- Minimum Integer
- Seating Arrangement
- Dominant Pairs
- Total Traversal Time
- Two Smallests in Every Subarray
- Largest Pair Sum
- Meeting Rooms
- Union of Two Sorted Arrays with Distinct Elements
- Reorder List
- Binary Tree to DLL
- Clone List with Next and Random
- Min distance between two given nodes of a Binary Tree
- Subtraction in Linked List
- Distinct occurrences
- AVL Tree Insertion
- AVL Tree Deletion
- Smallest window containing all characters of another string
- Minimum Cost Path
- Burning Tree
- Next Smallest Palindrome
- Search Pattern (KMP-Algorithm)
- Longest Prefix Suffix
- Number of distinct subsequences
- Wildcard string matching
- Circle of strings
- Longest repeating and non-overlapping substring
- Sum-string
- Sub-arrays with equal number of occurences
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Longest valid Parentheses
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Find all Critical Connections in the Graph
- Distribute candies in a binary tree
- Split Array Largest Sum
- Scrambled String
- Shortest Path by Removing K walls
- Find the String
- Maximum Number of Toys
- Articulation Point - I
- Largest rectangular sub-matrix whose sum is 0
- Vertex Cover
- MaxSkill
- Candy
- Better String
- Count Lucky Permutations
- Count the Substring
- Select Nodes
- Largest Sum Cycle
- 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
- Special Digits
- Cake Distribution Problem
- Game Of Subsets
- Geekina Hate 1s
- Making A Large Island
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