# Status Problem video Level Completes Likes 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 % 0 390 Convert Prefix to Postfix Expression Medium % 0 387 Convert Postfix to Prefix Expression Medium % 0 377 Convert Postfix to Infix Expression Medium % 0 371 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 % 0 277 Graph – Count all paths between source and destination Medium % 1 275 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 % 1 238 Separate 0’s and 1’s in a given array Beginner % 0 213 Find the last repeating character in a given string. Beginner % 0 171 Dynamic Programming - Longest Common Subsequence Medium % 0 170 Dynamic Programming - Rod Cutting Problem Medium % 1 163 Dynamic Programming - Maximum size square sub-matrix with all 1s Medium % 1 158 Backtracking - Search a Word In a Matrix Hard % 0 26 Check if one string is Rotation of another string Beginner % 1 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 Convert Prefix to Postfix Expression Convert Postfix to Prefix Expression Convert Postfix to Infix Expression 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 – Count all paths between source and destination 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 Separate 0’s and 1’s in a given array Find the last repeating character in a given string. Dynamic Programming - Longest Common Subsequence Dynamic Programming - Rod Cutting Problem Dynamic Programming - Maximum size square sub-matrix with all 1s Backtracking - Search a Word In a Matrix Check if one string is Rotation of another string 1
