private bool checkForVoteWinner()
{
// If there is one candidate left, vote is over
if (getAllCandidates().Count() == 1)
{
winningCandidate = getAllCandidates()[0];
return(true);
}
// If one candidate has more than 50% of vote, vote is over
int ballotCount = getBallots().Count();
VCSCandidate provisionallyWinningCandidate = null;
int provisionallyWinningScore = 51;
// For each candidate, check if they have more than 50% of the vote
foreach (VCSCandidate candidate in getAllCandidates())
{
int candidateVotes = getVotesForCandidate(candidate);
int percentageOfVote = (candidateVotes * 100) / ballotCount;
if (percentageOfVote >= provisionallyWinningScore)
{
provisionallyWinningCandidate = candidate;
provisionallyWinningScore = percentageOfVote;
}
}
winningCandidate = provisionallyWinningCandidate;
return(provisionallyWinningCandidate != null);
}
public void shouldStartCountingVotes()
{
// Reset the votes to 0
resetCandidateVotes();
// For each ballot, find the highest remaining candidate and add the vote
foreach (VCSBallot ballot in ballots)
{
int candidateIndex = 0;
while (ballot.hasCandidateAtIndex(candidateIndex))
{
// Get the candidate from the ballot
VCSCandidate candidate = ballot.getCandidateChoiceAtIndex(candidateIndex);
if (candidateVotes.ContainsKey(candidate))
{
int votes = candidateVotes[candidate];
candidateVotes[candidate] = ++votes;
break;
}
else
{
// That candidate doesn't appear in the structure, so has been removed
// Take the next choice instead
candidateIndex++;
}
}
}
checkForVoteWinner();
updateView();
}
/**
* Adds a new candidate to the ballot
*
* @param candidate - The candidate to add
*
* @pre. candidate != null
*
* @post. candidates != null
* @post. candidates contains candidate
*/
public void addCandidateToBallot(VCSCandidate candidate)
{
Debug.Assert(candidate != null, "Candidate is null");
if (candidates == null)
{
candidates = new List <VCSCandidate>();
}
candidates.Add(candidate);
}
public VCSCandidate getCandidateWithName(string name)
{
Debug.Assert(!name.Equals(""), "Name is empty");
Debug.Assert(isValidCandidateWithName(name), "Name is not valid");
VCSCandidate selectedCandidate = null;
foreach (VCSCandidate candidate in candidates)
{
if (candidate.getName().Equals(name))
{
selectedCandidate = candidate;
break;
}
}
return(selectedCandidate);
}
public void redistributeVotesForCandidates()
{
int lowestVote = int.MaxValue;
List <VCSCandidate> potentialLowestCandidates = new List <VCSCandidate>();
// remove the candidate with the least votes
foreach (VCSCandidate candidate in getAllCandidates())
{
int voteCount = candidateVotes[candidate];
if (voteCount < lowestVote)
{
// A new lowest vote, so reset the list of candidates with the same vote
potentialLowestCandidates = new List <VCSCandidate>();
// Add candidate to list of lowest votes
potentialLowestCandidates.Add(candidate);
// Update the lowest vote + candidate
lowestVote = voteCount;
}
else if (voteCount == lowestVote)
{
// Candidate has joint lowest vote, add to lowest vote list
potentialLowestCandidates.Add(candidate);
}
}
// Do more than one candidate have the lowest votes?
if (potentialLowestCandidates.Count() > 1)
{
// Fetch a random candidate, remove them
VCSCandidate lowestCandidate = getRandomCandidateToRemoveFromCandidatesWithLowestVotes(potentialLowestCandidates);
candidateVotes.Remove(lowestCandidate);
}
else
{ //Only one candidate with lowest votes
// remove from structure
candidateVotes.Remove(potentialLowestCandidates[0]);
}
// Recount the votes
shouldStartCountingVotes();
}
public int getVotesForCandidate(VCSCandidate candidate)
{
Debug.Assert(isValidCandidateWithName(candidate.getName()), "Candidate does not exist");
return(candidateVotes[candidate]);
}