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BASIC (3)
EASY (65)
MEDIUM (154)
HARD (19)
Rotate a Linked List
Sort a linked list of 0s, 1s and 2s
Add Number Linked Lists
Rearrange a linked list
Add 1 to a Linked List Number
Detect Loop in linked list
Quick Sort
Bottom View of Binary Tree
Intersection in Y Shaped Lists
Diameter of a Binary Tree
Merge two sorted linked lists
Tree Boundary Traversal
Delete a node from BST
Directed Graph Cycle
Undirected Graph Cycle
Largest subarray with 0 sum
Topological sort
Vertical Tree Traversal
Find the number of islands
Gas Station
Wildcard Pattern Matching
Remove loop in Linked List
Dijkstra Algorithm
Minimum Spanning Tree
Minimum Swaps to Sort
Palindrome Linked List
Rat in a Maze Problem - I
Bipartite Graph
Root to leaf paths sum
Top View of Binary Tree
k-th Smallest in BST
Merge Sort for Linked List
Union of Two Linked Lists
Root to Leaf Paths
Maximum path sum from any node
Predecessor and Successor
Children Sum in a Binary Tree
ZigZag Tree Traversal
Ceil in BST
Reverse array in groups
Smallest Positive Missing
Rearrange an array with O(1) extra space
Kadane's Algorithm
Majority Element
Count Inversions
Indexes of Subarray Sum
Triplet Sum in Array
Merge Without Extra Space
Possible paths between 2 vertices
Spirally traversing a matrix
Distance of nearest cell having 1
Unit Area of largest region of 1's
Longest Consecutive Subsequence
Case-specific Sorting of Strings
Stock span problem
Next Greater Element
K Sized Subarray Maximum
Largest number in K swaps
Combination Sum
Unique Subsets
Stickler Thief
Ways to Reach the n'th Stair
Longest Increasing Subsequence
Longest Common Subsequence
Kth Smallest
Shortest Common Supersequence
Rotten Oranges
Steps by Knight
Maximize The Cut Segments
Word Search
Word Boggle
Prerequisite Tasks
4 Sum - All Quadruples
Sort 0s, 1s and 2s
Painting the Fence
Search in Rotated Sorted Array
Subarray Sum Divisible By K
Longest Subarray with Sum K
k largest elements
Longest Common Substring
Smallest distinct window
Longest Substring with K Uniques
Longest Palindrome in a String
K-th element of two Arrays
Rod Cutting
Longest Palindromic Subsequence
First negative in every window of size k
Minimize the Heights II
First and Last Occurrences
Permutations of a String
Friends Pairing Problem
Minimum number of deletions and insertions
Mobile numeric keypad
Coin Change (Minimum Coins)
Maximum path sum in matrix
Partition Equal Subset Sum
Matchsticks game
Knight Walk
Next Permutation
Smaller on Left
Segregate even and odd nodes in a Linked List
Snake and Ladder Problem
Find the string in grid
Floyd Warshall
Flood fill Algorithm
Shortest Source to Destination Path
Spidey Sense
Iterative Inorder
Preorder traversal (Iterative)
Iterative Postorder
Subset Sum Problem
3 Sum Closest
Bellman-Ford
Open the gates
Number of Provinces
Course Schedule
Target Sum
Maximum product subset of an array
Smallest sum contiguous subarray
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
Number Of Islands
Number of Ways to Arrive at Destination
Path With Minimum Effort
Cheapest Flights Within K Stops
Connecting the graph
Shortest Path in Undirected Graph
Shortest path in Directed Acyclic Graph
Sum up the beauty
Water Problem
Grid Path 2
Stock Buy and Sell – with Cooldown
Subset II
Check if there exists a subsequence with sum K
Combination Sum II
Buy Stock with Transaction Fee
Introduction to DP
Partitions with Given Difference
Floor in BST
Next Greater Element in Circular Array
Minimum X (xor) A
Max Sum without Adjacents
Unique Paths in a Grid
Shy Geek
Yet another query problem
Bheem Wants Ladoos
GFG's new Game
Distinct Elements
Maximum Points
Array Game
Reverse a linked list
Remove duplicates from an unsorted linked list
Check for BST
Right View of Binary Tree
Mirror Tree
Maximum Width of Tree
Height of Binary Tree
Balanced Tree Check
Kth from End of Linked List
Middle of a Linked List
Check If Circular Linked List
Left View of Binary Tree
Intersection Sorted Linked Lists
Remove Duplicates from a Sorted Linked List
DFS of Graph
Insert a node in a BST
BFS of graph
Identical Trees
Lowest Common Ancestor in a BST
Minimum Depth of a Binary Tree
Unique rows in boolean matrix
Delete in a Singly Linked List
Level order traversal
Level of a Node in Binary Tree
Symmetric Tree
Depth of node
Frequency in Queue
First Set Bit
Rightmost different bit
Check K-th Bit
Array Leaders
Print adjacency list
Transpose of Matrix
Missing in Array
Missing And Repeating
String Duplicates Removal
Move all negative elements to end
Two sum -Pairs with 0 Sum
Maximum average subarray
Number of 1 Bits
Set all the bits in given range of a number
Minimum number of Coins
Maximize Toys
Sum of First N Natural Numbers
Surround the 1's
Split the binary string into substrings with equal number of 0s and 1s
Police Station
Odd Series
Stock Buy and Sell – Max one Transaction Allowed
Maximum Depth Of Binary Tree
Refueling
Minimize the sum
Transform to Sum Tree
Taxi Booking
Wifi Range
Binary Array
Cousins in Tree
Strong Students in School
Ticket Counter
Minimise the Distance
Check Anagram Existence
String Reboot
Two Smallests in Every Subarray
Count the complement pairs
Different Modulo Subsequence
Distinct occurrences
Alien Dictionary
Nodes at given distance in binary tree
String Permutations
Trapping Rain Water
Histogram Max Rectangular Area
Solve the Sudoku
Word Ladder I
Burning Tree
Print all LCS sequences
Minimum sum partition
Stock Buy and Sell – Max K Transactions Allowed
N-Queen Problem
Longest Increasing Path in a Matrix
Word Ladder II
Stock Buy and Sell – Max 2 Transactions Allowed
Account Merge
Chocolates Pickup
Floki the Boat Builder
Reverse a String
Value equal to index value
Set kth bit
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