(8 kyu) Rock Paper Scissors.js

// 1 Plain solution
const rps = (p1, p2) => {
    if (p1 === 'scissors' && p2 === 'paper') {
        return 'Player 1 won!';
    } else if (p1 === 'scissors' && p2 === 'rock') {
        return 'Player 2 won!';
    } else if (p1 === 'rock' && p2 === 'paper') {
        return 'Player 2 won!';
    } else if (p1 === 'rock' && p2 === 'scissors') {
        return 'Player 1 won!';
    } else if (p1 === 'paper' && p2 === 'rock') {
        return 'Player 1 won!';
    } else if (p1 === 'paper' && p2 === 'scissors') {
        return 'Player 2 won!';
    } else {
        return 'Draw!';
    }
};

// 2 Optimized solution
const rps = (p1, p2) => {
    if (p1 === p2) return 'Draw!';
    if (p1 === 'rock' && p2 === 'scissors') return 'Player 1 won!';
    if (p1 === 'scissors' && p2 === 'paper') return 'Player 1 won!';
    if (p1 === 'paper' && p2 === 'rock') return 'Player 1 won!';
    return 'Player 2 won!';
};

// 3 Clever solution
const rps = (p1, p2) => {
    if (p1 === p2) return "Draw!";
    var rules = { rock: "scissors", paper: "rock", scissors: "paper" };
    if (p2 === rules[p1]) {
        return "Player 1 won!";
    } else {
        return "Player 2 won!";
    }
};