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BASIC (17)
EASY (42)
MEDIUM (79)
HARD (6)
Add 1 to a Linked List Number
Bottom View of Binary Tree
Diameter of a Binary Tree
Sum Tree
Flattening a Linked List
Diagonal Tree Traversal
Directed Graph Cycle
Undirected Graph Cycle
LCA in Binary Tree
Two Stacks in an Array
The Celebrity Problem
Largest subarray with 0 sum
Topological sort
Get Min from Stack
Kth smallest element in a Matrix
Minimum Swaps to Sort
Rat in a Maze Problem - I
Merge two BST 's
Sort a stack
Top View of Binary Tree
Level order traversal
Peak element
Isomorphic Trees
ZigZag Tree Traversal
Count Number of SubTrees having given Sum
Count set bits
Power Of Numbers
Stock buy and sell
Kadane's Algorithm
Majority Element
Triplet Sum in Array
Subarray with 0 sum
Longest Consecutive Subsequence
Stock span problem
Next Greater Element
Infix to Postfix
Combination Sum
M-Coloring Problem
Stickler Thief
Allocate Minimum Pages
Zero Sum Subarrays
Kth Smallest
Rotate by 90 degree
Prerequisite Tasks
4 Sum - All Quadruples
Sort 0s, 1s and 2s
Single Among Doubles in a Sorted
Search in Rotated Sorted Array
Maximum Product Subarray
Row with max 1s
Substrings with K Distinct
Longest Subarray with Sum K
K-th element of two Arrays
Triplets with Smaller Sum
Rod Cutting
First negative in every window of size k
First and Last Occurrences
Number following a pattern
Unique Number II
Max Sum Increasing Subsequence
Sieve of Eratosthenes
Perfect Sum Problem
Power Set
Partition Equal Subset Sum
Subset Sums
Find nth root of m
Two odd Occuring
Iterative Inorder
Capacity To Ship Packages Within D Days
Cities and Teleporters
Reverse a Stack
Search in Rotated Array 2
Smallest Divisor
Prime Factorization using Sieve
Prefix to Infix Conversion
Prefix to Postfix Conversion
Minimum days to make M bouquets
Postfix to Prefix Conversion
Postfix to Infix Conversion
Sahil love good scorer
Right View of Binary Tree
Height of Binary Tree
Balanced Tree Check
Left View of Binary Tree
Transform to Sum Tree
Stack using two queues
Reverse Level Order Traversal
Stack using Linked List
Implement stack using array
Square Root
Leaves at Same Level or Not
Find length of Loop
Find the Frequency
Back to Front
Check K-th Bit
Power of 2
Floor in a Sorted Array
Parenthesis Checker
Union of Arrays with Duplicates
Product array puzzle
Missing And Repeating
Find Kth Rotation
Sort by Set Bit Count
Sorted and Rotated Minimum
Search in a Row-Column sorted matrix
Find Pair Given Difference
Smallest subarray with sum greater than x
Two sum -Pairs with 0 Sum
Sum of f(a[i], a[j]) over all pairs in an array of n integers
Palindrome String
K-th missing element
Number of 1 Bits
Ceil The Floor
Squares in N*N Chessboard
Prime Factors
Search insert position of K in a sorted array
Fair string
Find pairs with given sum in doubly linked list
All divisors of a Number
Find XOR of numbers from L to R.
Bit Manipulation
Queue using Linked List
Queue Using Array
C++ STL | Set 1 (vector)
Front to Back
Bit Difference
Value equal to index value
Immediate Smaller Element
Rotate Array by One
One odd Occuring
Array Subset
Odd or Even
Find position of set bit
Set the rightmost unset bit
Count Squares
Middle of Three
Swap two numbers
Sorted matrix
Max rectangle
Trapping Rain Water
Longest Prefix Suffix
Minimum sum partition
Median in a row-wise sorted Matrix
Minimize Max Distance to Gas Station
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