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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

Data structuresSpecific needFor each usernameMoved aheadAllowed modificationNever findPlace aheadPlace beforeFollowing parametersUser namesActual question says string arrayFirst line containsSubsequent linesSample input for customSeparate lineGood question