# Status Problem video Level Completes Likes
466

Lexicographically next permutation With One swap

Medium % 1
442

Find the number of distinct Islands OR connected components.

Hard % 0
426

Check if Graph is Bipartite - Adjacency List using Depth-First Search(DFS)

Hard % 0
416

Evaluation of Prefix Expressions (Polish Notation) | Set 2

Medium % 0
410

Evaluation of Prefix Expressions (Polish Notation) | Set 1

Medium % 0
392

Reverse a Stack using recursion - In Place (Without using extra memory)

Hard % 1
390

Convert Prefix to Postfix Expression

Medium % 0
388

Sort a given stack - Using Temporary Stack

Medium % 0
387

Convert Postfix to Prefix Expression

Medium % 0
377

Convert Postfix to Infix Expression

Medium % 0
372

Monotone Increasing Digits

Medium % 1
371

Convert Infix to Prefix Expression

Medium % 0
368

Max Flow Problem - Ford-Fulkerson Algorithm

Hard % 0
365

Convert Infix to Postfix Expression

Medium % 0
363

Evaluation of Infix expressions

Medium % 0
361

Convert Prefix to Infix Expression

Medium % 0
359

Merge K sorted Linked List - Using Priority Queue

Hard % 0
346

Valid Brackets – Part 2 | Stack Method

Beginner % 0
280

Graph – Find Cycle in Undirected Graph using Disjoint Set (Union-Find)

Hard % 0
275

Graph – Detect Cycle in a Directed Graph using colors

Hard % 0
274

Graph – Detect Cycle in an Undirected Graph using DFS

Medium % 0
273

Graph – Detect Cycle in a Directed Graph

Medium % 1
251

Dynamic Programming - Egg Dropping Problem

Hard % 0
250

Nuts & Bolts Problem (Lock & Key problem)

Beginner % 0
223

Stock Single Sell Problem - Dynamic Programming - O(n)

Medium % 2
216

Find the element which appears maximum number of times in the array

Medium % 0
215

Find duplicates in an given array in O(n) time and O(1) space

Medium % 0
214

Find the last non repeating character in a given string.

Beginner % 0
213

Find the last repeating character in a given string

Beginner % 0
209

Find longest Snake sequence in a given matrix

Medium % 1
198

Kadane's Algorithm - Maximum Subarray Problem

Medium % 1
195

Single Threaded Binary Tree Complete Implementation

Hard % 0
174

Dynamic Programming - Maximum Product Cutting Problem.

Medium % 1
171

Dynamic Programming - Longest Common Subsequence

Medium % 0

Lexicographically next permutation With One swap

Find the number of distinct Islands OR connected components.

Check if Graph is Bipartite - Adjacency List using Depth-First Search(DFS)

Evaluation of Prefix Expressions (Polish Notation) | Set 2

Evaluation of Prefix Expressions (Polish Notation) | Set 1

Reverse a Stack using recursion - In Place (Without using extra memory)

Convert Prefix to Postfix Expression

Sort a given stack - Using Temporary Stack

Convert Postfix to Prefix Expression

Convert Postfix to Infix Expression

Monotone Increasing Digits

Convert Infix to Prefix Expression

Max Flow Problem - Ford-Fulkerson Algorithm

Convert Infix to Postfix Expression

Evaluation of Infix expressions

Convert Prefix to Infix Expression

Merge K sorted Linked List - Using Priority Queue

Valid Brackets – Part 2 | Stack Method

Graph – Find Cycle in Undirected Graph using Disjoint Set (Union-Find)

Graph – Detect Cycle in a Directed Graph using colors

Graph – Detect Cycle in an Undirected Graph using DFS

Graph – Detect Cycle in a Directed Graph

Dynamic Programming - Egg Dropping Problem

Nuts & Bolts Problem (Lock & Key problem)

Stock Single Sell Problem - Dynamic Programming - O(n)

Find the element which appears maximum number of times in the array

Find duplicates in an given array in O(n) time and O(1) space

Find the last non repeating character in a given string.

Find the last repeating character in a given string

Find longest Snake sequence in a given matrix

Kadane's Algorithm - Maximum Subarray Problem

Single Threaded Binary Tree Complete Implementation

Dynamic Programming - Maximum Product Cutting Problem.

Dynamic Programming - Longest Common Subsequence