[Ethereum] solidity code compilation error

pragma solidity ^0.5.0;

contract Ballot {

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

    //modifer
    modifier onlyOwner () {
      require(msg.sender == chairperson);
      _;
    }

    /* struct Proposal {
        uint voteCount; // could add other data about proposal
    } */
    address public chairperson;
    mapping(address => Voter) public voters;
    uint[4] public proposals;

    // Create a new ballot with 4 different proposals.
    function Ballot() public {
        chairperson = msg.sender;
        voters[chairperson].weight = 2;
    }

    /// Give $(toVoter) the right to vote on this ballot.
    /// May only be called by $(chairperson).
    function register(address toVoter) public onlyOwner{
        if(voters[toVoter].weight != 0) revert();
        voters[toVoter].weight = 1;
        voters[toVoter].voted = false;
    }

    /// Give a single vote to proposal $(toProposal).
    function vote(uint8 toProposal) public {
        Voter storage sender = voters[msg.sender];
        if (sender.voted || toProposal >= 4 || sender.weight == 0) revert();
        sender.voted = true;
        sender.vote = toProposal;
        proposals[toProposal] += sender.weight;
    }

    function winningProposal() public view returns (uint8 _winningProposal) {
        uint256 winningVoteCount = 0;
        for (uint8 prop = 0; prop < 4; prop++)
            if (proposals[prop] > winningVoteCount) {
                winningVoteCount = proposals[prop];
                _winningProposal = prop;
            }
    }

    function getCount() public view returns (uint[8]) {
        return proposals;
    }
}

truffle compile

Compiling ./contracts/Ballot.sol...
Compiling ./contracts/Migrations.sol...

Compilation warnings encountered:

/home/bc/bheem/Ballot2/contracts/Ballot.sol:26:5: Warning: This declaration shadows an existing declaration.
    function Ballot() public {
    ^ (Relevant source part starts here and spans across multiple lines).
/home/bc/bheem/Ballot2/contracts/Ballot.sol:3:1: The shadowed declaration is here:
contract Ballot {
^ (Relevant source part starts here and spans across multiple lines).

,/home/bc/bheem/Ballot2/contracts/Migrations.sol:11:3: Warning: This declaration shadows an existing declaration.
  function Migrations() public {
  ^ (Relevant source part starts here and spans across multiple lines).
/home/bc/bheem/Ballot2/contracts/Migrations.sol:3:1: The shadowed declaration is here:
contract Migrations {
^ (Relevant source part starts here and spans across multiple lines).



/home/bc/bheem/Ballot2/contracts/Ballot.sol:26:5: SyntaxError: Functions are not allowed to have the same name as the contract. If you intend this to be a constructor, use "constructor(...) { ... }" to define it.
    function Ballot() public {
    ^ (Relevant source part starts here and spans across multiple lines).
,/home/bc/bheem/Ballot2/contracts/Migrations.sol:11:3: SyntaxError: Functions are not allowed to have the same name as the contract. If you intend this to be a constructor, use "constructor(...) { ... }" to define it.
  function Migrations() public {
  ^ (Relevant source part starts here and spans across multiple lines).
,/home/bc/bheem/Ballot2/contracts/Ballot.sol:26:5: Warning: This declaration shadows an existing declaration.
    function Ballot() public {
    ^ (Relevant source part starts here and spans across multiple lines).
/home/bc/bheem/Ballot2/contracts/Ballot.sol:3:1: The shadowed declaration is here:
contract Ballot {
^ (Relevant source part starts here and spans across multiple lines).

,/home/bc/bheem/Ballot2/contracts/Migrations.sol:11:3: Warning: This declaration shadows an existing declaration.
  function Migrations() public {
  ^ (Relevant source part starts here and spans across multiple lines).
/home/bc/bheem/Ballot2/contracts/Migrations.sol:3:1: The shadowed declaration is here:
contract Migrations {
^ (Relevant source part starts here and spans across multiple lines).

,/home/bc/bheem/Ballot2/contracts/Ballot.sol:57:46: TypeError: Data location must be "memory" for return parameter in function, but none was given.
    function getCount() public view returns (uint[8]) {
                                             ^-----^
Compilation failed. See above.
Truffle v5.0.2 (core: 5.0.2)
Node v8.12.0
 please help how to solve this ?