Featured Lists

Top 20 Problems on Dynamic programming

Top 10 Problems on Backtracking

Top 20 Problems on Graph

Top 25 Problems on Trees

Top 10 Problems on Bits Manipulation

Top 15 Problems in LinkedList

All Problems

# Status Problem video Level Completes Likes
464

Sum of distinct elements among two given sets

Beginner % 0
461

Insert a node in the given sorted linked list.

Beginner % 1
457

Given an array, print all unique subsets with a given sum.

Medium % 0
455

Replace array elements with maximum element on the right.

Medium % 0
454

Find all unique combinations of numbers (from 1 to 9 ) with sum to N

Medium % 0
447

Check If Given Undirected Graph is a tree

Medium % 0
445

Depth-First Search (DFS) in 2D Matrix/2D-Array - Recursive Solution

Beginner % 1
443

Check the completeness of given binary tree | Set 2 - Using Level Order Traversal

Medium % 0
442

Find the number of distinct Islands OR connected components.

Hard % 0
440

Given an array, Print sum of all subsets

Beginner % 1
437

Lexicographically previous permutation With One swap

Medium % 1
436

Find all unique combinations of exact K numbers (from 1 to 9 ) with sum to N

Medium % 0
433

Depth-First Search (DFS) in 2D Matrix/2D-Array - Iterative Solution

Beginner % 0
432

Breadth-First Search (BFS) in 2D Matrix/2D-Array

Beginner % 1
430

Longest substring with at most K unique characters

Medium % 2
427

Number of Islands using BFS

Medium % 0
415

Hamming Distance between two given strings

Beginner % 0
399

Round Price Problem

Hard % 0
397

Find Third Smallest elements in a given array

Beginner % 0
396

Optimizing Test Execution: Managing Test Dependencies for Sequential Order

Medium % 0
394

Find the maximum number present in a String

Beginner % 0
393

Count number of subgraphs in a given graph

Beginner % 0
391

Check if given an edge is a bridge in the graph

Medium % 0
388

Sort a given stack - Using Temporary Stack

Medium % 0
386

Convert Integer to Roman

Medium % 0
385

String to Integer (AtoI - ASCII to Integer) - Recursive Solution

Medium % 0
384

Grouping of Anagrams

Medium % 0
380

Count the number of nodes in a given binary tree

Beginner % 0
378

Longest contiguous character in a given String - O(N) Solution

Beginner % 0

Sum of distinct elements among two given sets

Insert a node in the given sorted linked list.

Given an array, print all unique subsets with a given sum.

Replace array elements with maximum element on the right.

Find all unique combinations of numbers (from 1 to 9 ) with sum to N

Check If Given Undirected Graph is a tree

Depth-First Search (DFS) in 2D Matrix/2D-Array - Recursive Solution

Check the completeness of given binary tree | Set 2 - Using Level Order Traversal

Find the number of distinct Islands OR connected components.

Given an array, Print sum of all subsets

Lexicographically previous permutation With One swap

Find all unique combinations of exact K numbers (from 1 to 9 ) with sum to N

Depth-First Search (DFS) in 2D Matrix/2D-Array - Iterative Solution

Breadth-First Search (BFS) in 2D Matrix/2D-Array

Longest substring with at most K unique characters

Number of Islands using BFS

Hamming Distance between two given strings

Round Price Problem

Find Third Smallest elements in a given array

Optimizing Test Execution: Managing Test Dependencies for Sequential Order

Find the maximum number present in a String

Count number of subgraphs in a given graph

Check if given an edge is a bridge in the graph

Sort a given stack - Using Temporary Stack

Convert Integer to Roman

String to Integer (AtoI - ASCII to Integer) - Recursive Solution

Grouping of Anagrams

Count the number of nodes in a given binary tree

Longest contiguous character in a given String - O(N) Solution