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BASIC (21)
EASY (67)
MEDIUM (119)
HARD (18)
Reverse a linked list
Frequency in a Linked List
Pairwise swap elements of a linked list
Node at a given index in linked list
Split a Linked List into two halves
Delete in a Doubly Linked List
Inorder Traversal
Right View of Binary Tree
K distance from root
Mirror 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
Postorder Traversal
Reverse Level Order Traversal
DFS of Graph
Insert a node in a BST
BFS of graph
Identical Trees
Insertion at doubly linked list
Binary Tree to BST
Search a node in BST
Delete in a Singly Linked List
Kth largest element in BST
Minimum element in BST
Counting Sort
Reverse Using Stack
Symmetric Tree
Reverse an Array
Floor in a Sorted Array
Parenthesis Checker
N meetings in one room
Missing in Array
Product array puzzle
Max Value Permutation
Missing And Repeating
Find Kth Rotation
Maximize sum after K negations
Common in 3 Sorted Arrays
Sorted and Rotated Minimum
Move all negative elements to end
Chocolate Distribution Problem
Alternate Positive Negative
Number of occurrence
Min Number of Flips
Palindrome String
Shop in Candy Store
Number of 1 Bits
Armstrong Numbers
Nth Fibonacci Number
Count Digits
Prime Number
Prime Factors
Count Primes In Range
Rearrange Geek and his Classmates
Negative Prefix
Print N to 1 without loop
Print GFG n times
All divisors of a Number
Implement Lower Bound
Implement Upper Bound
Ceil in a Sorted Array
Min distance between two given nodes of a Binary Tree
Serialize and deserialize a binary tree
Alien Dictionary
Nodes at given distance in binary tree
Trapping Rain Water
Solve the Sudoku
Burning Tree
The Painter's Partition Problem-II
Palindrome SubStrings
Palindromic Partitioning
Matrix Chain Multiplication
Median in a row-wise sorted Matrix
Boolean Parenthesization
Word Break - 2
N-Queen Problem
Optimal binary search tree
Word Ladder II
Minimize Max Distance to Gas Station
Detect Loop in linked list
Insert in Sorted Circular Linked List
Check for BST
Merge Sort
Quick Sort
Bottom View of Binary Tree
Intersection in Y Shaped Lists
Diameter of a Binary Tree
Flattening a Linked List
Tree Boundary Traversal
Implement stack using array
Delete a node from BST
Directed Graph Cycle
Undirected Graph Cycle
LCA in Binary Tree
Lowest Common Ancestor in a BST
Two Stacks in an Array
The Celebrity Problem
Largest subarray with 0 sum
Topological sort
Kth smallest element in a Matrix
Dijkstra Algorithm
Minimum Spanning Tree
Interleaved Strings
Count Palindromic Subsequences
Palindrome Linked List
Rat in a Maze
Bipartite Graph
Top View of Binary Tree
k-th Smallest in BST
Level order traversal
Root to Leaf Paths
Populate Inorder Successor for all nodes
Construct Tree from Inorder & Preorder
Maximum path sum
Predecessor and Successor
Children Sum in a Binary Tree
Find length of Loop
Normal BST to Balanced BST
ZigZag Tree Traversal
Ceil in BST
Wave Array
Kadane's Algorithm
Majority Element
Count Inversions
Triplet Sum in Array
Spirally traversing a matrix
Distance of nearest cell having 1
Subarray with 0 sum
Longest Consecutive Subsequence
Strings Rotations of Each Other
Case-specific Sorting of Strings
Postfix Evaluation
Infix to Postfix
K Sized Subarray Maximum
Fractional Knapsack
Job Sequencing Problem
Minimum Platforms
Target Sum Combinations
M-Coloring Problem
Egg Dropping Puzzle
Optimal Strategy For A Game
Longest Increasing Subsequence
Longest Common Subsequence
0 - 1 Knapsack Problem
Allocate Minimum Pages
Preorder to BST
Kth Smallest
Nth Catalan Number
Rotate by 90 degree
4 Sum - All Quadruples
Sort 0s, 1s and 2s
Search in Rotated Sorted Array
Maximum Product Subarray
Row with max 1s
Longest Subarray with Sum K
Count the Reversals
Longest Common Substring
Smallest distinct window
Longest Substring with K Uniques
K-th element of two Arrays
Triplets with Smaller Sum
Rod Cutting
Minimum swaps and K together
Longest Palindromic Subsequence
First and Last Occurrences
Coin Change (Count Ways)
Sieve of Eratosthenes
Gold Mine Problem
Power Set
nCr
Maximum path sum in matrix
Partition Equal Subset Sum
Subset Sums
Choose and Swap
Find nth root of m
Preorder Traversal and BST
Segregate even and odd nodes in a Linked List
Floyd Warshall
Negative weight cycle
Iterative Inorder
Preorder traversal (Iterative)
Iterative Postorder
Subset Sum Problem
All Palindromic Partitions
Bellman-Ford
Flatten binary tree to linked list
Number of Distinct Islands
Shortest Distance in a Binary Maze
Minimum Multiplications to reach End
Shortest Path in Undirected Graph
Shortest path in Directed Acyclic Graph
Frog Jump
Geek's Training
Aggressive Cows
Shortest Path in Weighted undirected graph
Non-overlapping Intervals
Shortest Job first
Floor in BST
Rotate Array
Find Length of Linked List
Queue Using Array
Preorder Traversal
Linked List Insertion At End
Circular Linked List Traversal
Print 1 To N Without Loop
Sorted Array Search
Reverse a String
Find second largest element
Sum of Natural Numbers
Value equal to index value
Quick Left Rotation
Largest Element in Array
Rotate Array by One
Rotating an Array
GCD of two numbers
Factorial
Print 1 to n without using loops
Count Squares
Sorted matrix
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