rockPaperScissors.js

/*
* Write a function that generates every sequence of throws a single
* player could throw over a three-round game of rock-paper-scissors.
*
* Example:
*   [
*     [ // one possible three round game outcome
*       'rock',    // round 1
*       'paper',   // round 2
*       'scissors' // round 3
*     ],
*     [ // next possible three round game outcome
*       'rock',    // round 1
*       'paper',   // round 2
*       'rock'     // round 3
*     ],
*   etc...
*   ]
*
* Extra credit:
*   - Make your function return answers for any number of rounds.
* Example:
* rockPaperScissors(5); // => [['rock', 'rock', 'rock', 'rock', 'rock'], etc...]
*
*/

var rockPaperScissors = function () {
  var numRounds = 3;
  var combinations = 0;
  var result = [];
  var throwOptions = ['rock', 'paper', 'scissors'];
  for (var i = 0; i < numRounds; i++) {
    for (var j = 0; j < numRounds; j++) {
      for (var k = 0; k < throwOptions.length; k++) {
        result.push([throwOptions[i], throwOptions[j], throwOptions[k]]);
        combinations++;
      }
    }
  }
  console.log('Number of combinations: ' + combinations);
  return result;
};