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BASIC (27)
EASY (59)
MEDIUM (121)
HARD (18)
Rotate Array
Count Linked List Nodes
Implement stack using array
First Occurence
C++ STL | Set 6 (set)
Who has the majority?
Array insert at index
Array insert at end
Absolute Value
Convert Celsius To Fahrenheit
Quadratic Equation Roots
Bit Difference
Number is sparse or not
Array Search
Sorted Array Search
Binary String
Addition Under Modulo
Multiplication Under Modulo
Minimum At Pop
Reverse a String
Balanced Array
Fighting the darkness
Rotate Array by One
Game with nos
Ishaan Loves Chocolates
Min and Max in Array
Pattern 1
Nearest Perfect Square
A Boolean Matrix Problem
Toggle The Middle
XOR Pair
Average of String
Remove duplicates from an unsorted linked list
Bubble Sort
Check for BST
Mirror Tree
Height of Binary Tree
Queue using two Stacks
Remove Duplicates from a Sorted Linked List
Stack using two queues
DFS of Graph
BFS of graph
Square Root
BST Keys in a Range
More than n/k Occurrences
Reverse first K of a Queue
Find the Frequency
Max and Second Max
First Set Bit
Rightmost different bit
Check K-th Bit
Factorial Of Number
Digits In Factorial
GP Term
Primality Test
Longest Consecutive 1's
Mean And Median of Array
Power of 2
Swap odd and even bits
Equilibrium Point
Array Leaders
Print adjacency list
Naive Pattern Search
Anagram
Strings Rotations of Each Other
The Modified String
Reverse Words
Minimum indexed character
Panagram Checking
Parenthesis Checker
K largest elements
Minimum Cost of ropes
N meetings in one room
Largest number with given sum
Doubly Linked List Conversion
Union of Arrays with Duplicates
Missing in Array
Move all negative elements to end
Count the triplets
Total count
Number Of Open Doors
Aterps Game
Absolute difference divisible by K
Minimum cost of ropes
Pattern 2
Pattern 3
Smaller on Right
The Conversion To One
Get the Shadow
Rotate a Linked List
Count BST nodes that lie in a given range
Quick Sort
Binary Tree from Inorder and Postorder
Bottom View of Binary Tree
Intersection in Y Shaped Lists
Diameter of a Binary Tree
Heap Sort
Construct Binary Tree from Parent Array
Connect Nodes of Levels
Delete a node from BST
Directed Graph Cycle
Undirected Graph Cycle
LCA in Binary Tree
Maximum difference between node and its ancestor
Binary Heap Operations
The Celebrity Problem
Topological sort
Vertical Tree Traversal
Merge K sorted linked lists
Find the number of islands
Get Min from Stack
Serialize and deserialize a binary tree
Gas Station
Linked List to Binary Tree
Check if subtree
Remove loop in Linked List
Dijkstra Algorithm
Minimum Spanning Tree
Minimum Swaps to Sort
Palindrome Linked List
Strongly Connected
Closest in BST
Merge two BST 's
Merge k Sorted Arrays
Bridge edge in a graph
Top View of Binary Tree
Merge Sort for Linked List
Binary Tree to CDLL
Foldable Binary Tree
Count the nodes at distance K from leaf
Maximum path sum from any node
Convert Level Order Traversal to BST
ZigZag Tree Traversal
Count Number of SubTrees having given Sum
Vertical Width of a Binary Tree
Swap Kth nodes from ends
Add two numbers represented by Linked List
Maximum sum of Non-adjacent nodes
Mother Vertex
Rabin Karp - Pattern Searching
Floor in BST
Ceil in BST
Pair Sum in BST
Maximum AND Value
Smallest Positive Missing
Wave Array
Possible Words From Phone Digits
Rearrange Array Alternately
Rearrange an array with O(1) extra space
Rotate Array
Check if array is sorted and rotated
Kadane's Algorithm
Majority Element
Count Inversions
Indexes of Subarray Sum
Triplet Sum in Array
Number of pairs
Merge Without Extra Space
Merge three sorted arrays
Closer to sort
Possible paths between 2 vertices
Level of Nodes
Make Matrix Beautiful
Boolean Matrix
Spirally traversing a matrix
Search in a sorted Matrix
Distance of nearest cell having 1
Unit Area of largest region of 1's
Subarrays with equal 1s and 0s
Longest Consecutive Subsequence
Stock span problem
Next Greater Element
Infix to Postfix
K Sized Subarray Maximum
Kth largest element
Kth smallest element
Kth largest element in a stream
K Most occurring elements
Nearly sorted
Rearrange characters
Fractional Knapsack
Job Sequencing Problem
Minimum Platforms
Largest number in K swaps
Rat Maze With Multiple Jumps
Black and White
Combination Sum
Unique Subsets
M-Coloring Problem
Sort according to an Array
Allocate Minimum Pages
Preorder to BST
X Total Shapes
Zero Sum Subarrays
Find whether path exist
Kth Smallest
Rotten Oranges
Steps by Knight
Count only Repeated
Longest Subarray Of Evens And Odds
Maximum Water Between Two Buildings
Max Sum without Adjacents
K-th element of two Arrays
Sum of Query II
Jump Game
Rearrange characters
Check if a String is Subsequence of Other
Binary Tree to DLL
Clone List with Next and Random
LRU Cache
Merge Sort on Doubly Linked List
Fixing Two nodes of a BST
Pattern Search KMP
Trapping Rain Water
Max Circular Subarray Sum
Pattern Search
Smallest window containing all characters of another string
Histogram Max Rectangular Area
Max of min for every window size
Find median in a stream
Solve the Sudoku
Strongly connected component (Tarjans's Algo)
Minimum Cost Path
Median of Two sorted arrays
Number Formation
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