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HackerRank Coding Question for Placements 5
Ques. Find winner of an election where votes are represented as candidate names Given an array of names of candidates in an election. A candidate name in array represents a vote casted to the candidate. Print the name of candidates received Max vote. If there is tie, print lexicographically smaller name. A simple solution is to run two loops and count occurrences of every word. Time complexity of this solution is O(n * n * MAX_WORD_LEN). An efficient solution is to use Hashing. We insert all votes in a hash map and keep track of counts of different names. Finally we traverse the map and print the person with maximum votes.