# Status Problem video Level Completes Likes 407 Integer Replacement Problem Medium % 0 401 Introduction to Bipartite Graphs OR Bigraphs Medium % 0 387 Convert Postfix to Prefix Expression Medium % 0 377 Convert Postfix to Infix Expression Medium % 0 373 Longest substring with at most two unique characters Medium % 0 371 Convert Infix to Prefix Expression Medium % 0 368 Max Flow Problem - Ford-Fulkerson Algorithm Hard % 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 % 0 347 Find the nearest building which has bike | Find nearest specific vertex from source in a graph. Hard % 0 346 Valid Brackets – Part 2 | Stack Method Beginner % 0 338 Find Number of reverse pairs in an array Hard % 1 330 Check if Given Number is power of 2 Beginner % 1 325 Find no of reverse pairs in an array which is sorted in two parts in O(N) Medium % 1 313 Check if two Strings are equal without using built-in function Beginner % 0 296 Replace all vowels with next consonant in a given string Medium % 0 293 Convert Number to base 3 String Representation Beginner % 1 271 Snake and Ladder Problem Hard % 1 263 Minimum Copy Paste Operations Medium % 0 Integer Replacement Problem Introduction to Bipartite Graphs OR Bigraphs Convert Postfix to Prefix Expression Convert Postfix to Infix Expression Longest substring with at most two unique characters Convert Infix to Prefix Expression Max Flow Problem - Ford-Fulkerson Algorithm Evaluation of Infix expressions Convert Prefix to Infix Expression Merge K sorted Linked List - Using Priority Queue Find the nearest building which has bike | Find nearest specific vertex from source in a graph. Valid Brackets – Part 2 | Stack Method Find Number of reverse pairs in an array Check if Given Number is power of 2 Find no of reverse pairs in an array which is sorted in two parts in O(N) Check if two Strings are equal without using built-in function Replace all vowels with next consonant in a given string Convert Number to base 3 String Representation Snake and Ladder Problem Minimum Copy Paste Operations 1 2 3 4 5 6
