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SCHOOL (1)
BASIC (10)
EASY (45)
MEDIUM (39)
HARD (2)
Rotate a Linked List
Add Number Linked Lists
Merge 2 sorted linked list in reverse order
Detect Loop in linked list
Insert in Sorted Circular Linked List
Merge Sort
Diameter of a Binary Tree
Merge two sorted linked lists
Sum Tree
Connect Nodes of Levels
Delete a node from BST
LCA in Binary Tree
The Celebrity Problem
Find the number of islands
Dijkstra Algorithm
Kadane's Algorithm
Count Inversions
Indexes of Subarray Sum
Spirally traversing a matrix
Next Greater Element
Kth smallest element
Longest Increasing Subsequence
Longest Common Subsequence
0 - 1 Knapsack Problem
Generate Parentheses
Sort 0s, 1s and 2s
Maximize Number of 1's
Pythagorean Triplet
Search in Rotated Sorted Array
Max Sum without Adjacents
k largest elements
Longest Palindrome in a String
Product Pair
nCr
Knight Walk
Maximum sum of hour glass
Subarrays with sum K
Detect cycle in a directed graph
Longest Palindrome Substring
Reverse a linked list
Check for BST
Mirror Tree
Two Mirror Trees
Maximum Width of Tree
Delete without head pointer
Height of Binary Tree
Middle of a Linked List
Check If Circular Linked List
Left View of Binary Tree
Transform to Sum Tree
Intersection Sorted Linked Lists
Queue using two Stacks
Stack using two queues
Level Order in spiral form
Reverse Level Order Traversal
Stack using Linked List
Insert a node in a BST
BFS of graph
Root to leaf path sum
Binary Search
Level Order Line by Line
BST Keys in a Range
Equilibrium Point
Array Leaders
Reverse Words
Non Repeating Character
Parenthesis Checker
Minimum indexed character
Generate Binary Numbers
Missing in Array
Maximum value
Find Kth Rotation
Next greater number set digits
Search in a Row-Column sorted matrix
String Duplicates Removal
Bitonic Point
Greater on right side
Second most repeated string in a sequence
Sum Pair closest to target
Minimum Operations
Palindrome
Overlapping rectangles
Inverted triangle of stars
Stickler Thief
Print Linked List
Queue using Linked List
Keypad typing
Segregate Even and Odd numbers
Immediate Smaller Element
Remove Spaces
Binary representation
Angle between hour and minute hand
Check if given four points form a square
Student record
Reverse an Array
Linked List Group Reverse
Ugly Numbers
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