Question

Design a ranked-choice voting system. A single person votes by handing in an ordered array of names like : ["alice", "bob", "charlie", "dan"...]. Candidates are given 3 points for 1st place, 2 points for 2nd and 1 point for 3rd place. Given an array of names, return the candidates in order of most points to least. Input : [[A, B, C A, C, D D,A,C]]. Output : [A, D , C , B]. Consider the following: 1] Use the Design principles and design patterns in the code. 2] Write Executable code with Junit Tests and Console Tests. 3] How can we use this code in concurrent environment?

Answer 1

The first past the post voting system in the U.S. can lead to winners without a majority, which ranked-choice voting or IRV systems aim to fix by ensuring broader support for elected candidates.

Step-by-step explanation:

The United States currently operates under a first past the post voting system in many elections, which can result in a candidate winning with only a plurality of votes rather than a clear majority. This could potentially lead to representation that does not accurately reflect the preferences of the electorate, allow a candidate to win without broad support, and contribute to voter disenchantment if they feel their votes have less impact. To mitigate issues like voting cycles and lack of majority representation, alternative systems like ranked-choice voting or Instant Run-Off Voting (IRV) can be implemented.

In a ranked-choice voting system, voters list candidates in order of preference. Points are assigned based on these preferences, typically with more points for higher rankings. This system tends to ensure that winning candidates have broader support among the electorate.