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LotteryApp.sol
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LotteryApp.sol
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// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0 <0.9.0;
contract LotteryApp {
address public manager;
address payable[] public players;
constructor() {
manager = msg.sender;
}
function enter() public payable {
require(msg.value > 0.01 ether);
players.push(payable(msg.sender));
}
function random() private view returns (uint) {
return uint(keccak256(abi.encodePacked(block.difficulty, block.timestamp, players)));
}
function pickWinner() public restricted {
uint index = random() % players.length;
players[index].transfer(address(this).balance);
players = new address payable[](0);
}
modifier restricted() {
require(msg.sender == manager);
_;
}
function getPlayers() public view returns (address payable[] memory) {
return players;
}
}