SKP's Algorithms and Data Structures #5: Java Problem: Changes in Usernames This Article Series Focuses on Algorithms, Data Structures, or Applying them to Problem Solving. In this Article, We Discuss the Solution to [Usernames Changes] Problem from Hacker Rank. by [Question/Problem Statement is the Adapted from HackerRank] [Problem Solving] There is a Specific Need for Changes in a List of Usernames. In a given List of Usernames — For Each Username — If the Username can be Modified and Moved Ahead in a Dictionary. The Allowed Modification is that Alphabets can change Positions in the Given Username. Example
"Aba" can be Changed to only "Baa" — Hence, It can Never Find a Place Ahead in the Dictionary. Hence, Output will be "