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harshitmongre
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BASIC (8)
EASY (94)
MEDIUM (129)
HARD (22)
- Reverse alternate nodes in Link List
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Detect Loop in linked list
- Quick Sort
- Delete without head pointer
- Heap Sort
- Merge two sorted linked lists
- Flattening a Linked List
- Lowest Common Ancestor in a BST
- Two Stacks in an Array
- Topological sort
- Find kth element of spiral matrix
- Remove loop in Linked List
- Multiply two strings
- Minimum Swaps to Sort
- BST with Dead End
- Duplicate Subtree
- Find Common Nodes in two BSTs
- Peak element
- Leftmost and rightmost nodes of binary tree
- Isomorphic Trees
- Median of BST
- Normal BST to Balanced BST
- Kth Ancestor in a Tree
- Mother Vertex
- Reverse array in groups
- Smallest Positive Missing
- Power Of Numbers
- Wave Array
- Rearrange an array with O(1) extra space
- Maximum Index
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Indexes of Subarray Sum
- Merge Without Extra Space
- Level of Nodes
- Make Matrix Beautiful
- Boolean Matrix
- Subarray with 0 sum
- Minimum Jumps
- Stickler Thief
- Longest Increasing Subsequence
- Longest Common Subsequence
- Lucky Numbers
- Zero Sum Subarrays
- Kth Smallest
- Nth Catalan Number
- Top K Frequent in Array
- Word Search
- 4 Sum - All Quadruples
- Sort 0s, 1s and 2s
- Maximum Index
- Number of subarrays with maximum values in given range
- Flip Bits
- Sum of Middle elements of two sorted arrays
- Single Among Doubles in a Sorted
- Consecutive 1's not allowed
- Pythagorean Triplet
- Painting the Fence
- Search in Rotated Sorted Array
- Form the Largest Number
- Maximum Product Subarray
- Check if a string is repetition of its substring of k-length
- Column name from a given column number
- Substrings with K Distinct
- Max Sum without Adjacents
- k largest elements
- Sum of XOR of all pairs
- Longest Substring with K Uniques
- Longest Palindrome in a String
- K-th element of two Arrays
- Arranging the array
- Rod Cutting
- LCS of three strings
- Longest Palindromic Subsequence
- Minimize the Heights II
- Transform to prime
- First and Last Occurrences
- Minimum Deletions
- Permutations of a String
- Number following a pattern
- Subarrays Product Less than K
- Unique Number II
- Bleak Numbers
- Game of XOR
- Largest prime factor
- Modified Game of Nim
- Coin Change (Count Ways)
- Gold Mine Problem
- Perfect Sum Problem
- Knapsack with Duplicate Items
- nCr
- Partition Equal Subset Sum
- Count possible ways to construct buildings
- Array Pair Sum Divisibility Problem
- Matchsticks game
- Number of paths
- Smith Number
- How Many X's?
- Longest Repeating Subsequence
- Stream First Non-repeating
- Replace O's with X's
- Express as sum of power of natural numbers
- Find the string in grid
- Techfest and the Queue
- Shortest Source to Destination Path
- Construct list using given q XOR queries
- Prefix match with other strings
- Shortest Prime Path
- Anti Diagonal Traversal of Matrix
- Unique Number III
- Reverse a Stack
- Maximum Meetings in One Room
- Max Equal sum of 3 Stacks
- Buy Maximum Stocks
- Number Of Enclaves
- Eventual Safe States
- Shortest path in Directed Acyclic Graph
- Task Scheduler
- Maximum Sum Combination
- Floor in BST
- Max Sum without Adjacents
- Valid Compressed String
- Update Queries
- Smaller Sum
- Find Number
- Fraction pairs with sum 1
- Linked List Group Reverse
- Maximum subset XOR
- AVL Tree Deletion
- Nodes at given distance in binary tree
- String Permutations
- Solve the Sudoku
- Next Smallest Palindrome
- Number of distinct subsequences
- Wildcard string matching
- Longest repeating and non-overlapping substring
- Sum-string
- Palindromic Partitioning
- Next Happy Number
- Brackets in Matrix Chain Multiplication
- Search Pattern (Rabin-Karp Algorithm)
- Largest rectangular sub-matrix whose sum is 0
- Candy
- Largest Sum Cycle
- Shortest Path Using Atmost One Curved Edge
- Min Time
- Geekina Hate 1s
- Making A Large Island
- Reverse a linked list
- Pairwise swap elements of a linked list
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Right View of Binary Tree
- Height of Binary Tree
- Balanced Tree Check
- Check If Circular Linked List
- Find Transition Point
- Remove Duplicates from a Sorted Linked List
- Level Order in spiral form
- DFS of Graph
- Stack using Linked List
- Insert a node in a BST
- BFS of graph
- Binary Search
- Binary Tree to BST
- Unique rows in boolean matrix
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Array Duplicates
- Three way partitioning
- Inorder Successor in BST
- Insert in a Sorted List
- More than n/k Occurrences
- Leaf under budget
- Queue Reversal
- Find Sum Pairs Across Two BSTs
- Delete Mid of a Stack
- Swap the array elements
- Frequency in Queue
- First Set Bit
- Rightmost different bit
- Check K-th Bit
- Power of 2
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Print adjacency list
- Sum of upper and lower triangles
- Transpose of Matrix
- Matrix Boundary Traversal
- Winner of an election
- Reverse Words
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Count number of hops
- Check Equal Arrays
- Missing in Array
- Roman Number to Integer
- Adding Ones
- Move All Zeroes to End
- Minimize the sum of product
- Move all negative elements to end
- Chocolate Distribution Problem
- Swap and Maximize
- Second Largest
- Convert array into Zig-Zag fashion
- Rotate Bits
- Find all pairs with a given sum
- Number of occurrence
- String's Count
- Longest Common Prefix of Strings
- Two sum -Pairs with 0 Sum
- Segregate 0s and 1s
- At Least K Occurrences
- Find the closest pair from two arrays
- Palindrome String
- Binary representation of next number
- Is Binary Number Multiple of 3
- Minimum Operations
- Number of 1 Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Copy Set Bits in Range
- Shortest path from 1 to n
- Reach the Nth point
- Perfect Numbers
- Largest number possible
- Sum of First N Natural Numbers
- Maximum Diamonds
- Surround the 1's
- Inorder Traversal and BST
- Letters Collection
- Bus Ticket Change
- Last cell in a Matrix
- Cutting Rectangles
- Max Level Sum in Binary Tree
- Maximum Identical Bowls
- Make Palindrome
- Ticket Counter
- Unique Number of Occurrences