Voting.sol

pragma solidity ^0.5.0;

contract Voting {
    mapping(bytes32 => uint256) public votesReceived;
    bytes32[] public candidateList;
    
    event newVoting(bytes32 candidate);
    
    constructor(bytes32[] memory candidateNames) public {
        candidateList = candidateNames;
    }
    
    function totalVotesFor(bytes32 candidate) public view returns(uint256) {
        require(validCandidate(candidate));
        return votesReceived[candidate];
    }
    function voteForCandidate(bytes32 candidate) public {
        require(validCandidate(candidate));
        votesReceived[candidate] += 1;
        emit newVoting(candidate);
    }
    
    function validCandidate(bytes32 candidate) public view returns(bool) {
        for(uint i = 0 ; i < candidateList.length ; i++){
            if(candidateList[i] == candidate){
                return true;
            }
        }
    }
}