# 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 % 0 390 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 % 0 254 Sum of all sub arrays in O(n) Time Hard % 0 251 Dynamic Programming - Egg Dropping Problem Hard % 0 225 Swap two numbers without using extra variable Beginner % 0 223 Stock Single Sell Problem - O(n) Solution Hard % 2 222 Maximum Subarray OR Largest Sum Contiguous Subarray Problem – Divide and Conquer Hard % 0 208 Dynamic Programming - Count all paths in 2D Matrix with Obstructions in it Medium % 1 199 Dynamic Programming - Maximum Subarray Problem Medium % 0 198 Kadane's Algorithm - Maximum Subarray Problem Medium % 1 195 Single Threaded Binary Tree Complete Implementation Hard % 0 185 Generate Maximum revenue by selling K tickets from N windows 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 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 Sum of all sub arrays in O(n) Time Dynamic Programming - Egg Dropping Problem Swap two numbers without using extra variable Stock Single Sell Problem - O(n) Solution Maximum Subarray OR Largest Sum Contiguous Subarray Problem – Divide and Conquer Dynamic Programming - Count all paths in 2D Matrix with Obstructions in it Dynamic Programming - Maximum Subarray Problem Kadane's Algorithm - Maximum Subarray Problem Single Threaded Binary Tree Complete Implementation Generate Maximum revenue by selling K tickets from N windows 1
