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ballot.sol

pragma solidity ^0.4.0;
contract Ballot {

    struct Voter {
        uint weight;
        bool voted;
        uint8 vote;
        address delegate;
    }
    struct Proposal {
        uint voteCount;
    }

    address chairperson;
    mapping(address => Voter) voters;
    Proposal[] proposals;

    /// Create a new ballot with $(_numProposals) different proposals.
    function Ballot(uint8 _numProposals) public {
        chairperson = msg.sender;
        voters[chairperson].weight = 1;
        proposals.length = _numProposals;
    }

    /// Give $(toVoter) the right to vote on this ballot.
    /// May only be called by $(chairperson).
    function giveRightToVote(address toVoter) public {
        if (msg.sender != chairperson || voters[toVoter].voted) return;
        voters[toVoter].weight = 1;
    }

    /// Delegate your vote to the voter $(to).
    function delegate(address to) public {
        Voter storage sender = voters[msg.sender]; // assigns reference
        if (sender.voted) return;
        while (voters[to].delegate != address(0) && voters[to].delegate != msg.sender)
            to = voters[to].delegate;
        if (to == msg.sender) return;
        sender.voted = true;
        sender.delegate = to;
        Voter storage delegateTo = voters[to];
        if (delegateTo.voted)
            proposals[delegateTo.vote].voteCount += sender.weight;
        else
            delegateTo.weight += sender.weight;
    }

    /// Give a single vote to proposal $(toProposal).
    function vote(uint8 toProposal) public {
        Voter storage sender = voters[msg.sender];
        if (sender.voted || toProposal >= proposals.length) return;
        sender.voted = true;
        sender.vote = toProposal;
        proposals[toProposal].voteCount += sender.weight;
    }

    function winningProposal() public constant returns (uint8 _winningProposal) {
        uint256 winningVoteCount = 0;
        for (uint8 prop = 0; prop < proposals.length; prop++)
            if (proposals[prop].voteCount > winningVoteCount) {
                winningVoteCount = proposals[prop].voteCount;
                _winningProposal = prop;
            }
    }
}

ballot_test.sol

pragma solidity ^0.4.7;
import "remix_tests.sol"; // this import is automatically injected by Remix.
import "./ballot.sol";

contract test3 {
   
    Ballot ballotToTest;
    function beforeAll () {
       ballotToTest = new Ballot(2);
    }
    
    function checkWinningProposal () public {
        ballotToTest.vote(1);
        Assert.equal(ballotToTest.winningProposal(), uint(1), "1 should be the winning proposal");
    }
    
    function checkWinninProposalWithReturnValue () public constant returns (bool) {
        return ballotToTest.winningProposal() == 1;
    }
}

timeLock.sol

pragma solidity ^0.4.25;

/**
 * @author milti leonard
 */

contract timeLock {

    address public owner;     
    uint public lockPeriod;
    struct Participant {
        uint lockPeriodStart;
        bool active;
        uint amount;    // amount will be referenced in *wei*
    }
    
    mapping(address => Participant) public participants;
    modifier onlyOwner {
        require(msg.sender == owner,"only the owner can execute this function");
        _;
    }
  
    constructor (uint _lockPeriod) public {
        require(_lockPeriod > 0, "lock period should be less than 0");
        owner = msg.sender;
        lockPeriod = _lockPeriod;
    }

    function() public {
    revert();
    }

    function lockFunds() public payable {
        Participant storage _p = participants[msg.sender];
        require(_p.active == false, "sender already has funds locked");
        _p.active = true;
        _p.lockPeriodStart = now;
        _p.amount = msg.value;
    }

    function releaseFunds() public {
        Participant storage _p = participants[msg.sender];
        require(_p.active == true, "no locked funds for this account");
        require(now >= _p.lockPeriodStart + lockPeriod, "lock period has not yet expired"); 
        uint _amountToRefund = _p.amount; 
        delete participants[msg.sender];
        msg.sender.transfer(_amountToRefund);
    }

    function updateLockPeriod(uint _newPeriod) public onlyOwner {
        lockPeriod = _newPeriod;
    }

}