suguru03

/**
 * How to use.
 * 1. access to http://suguru03.github.io/yasuda-benchmark/
 * 2. gist("https://gist.github.com/suguru03/b35074cd74e132ffdd7cb10940b3b873").execute();
 */
var root = this;

var setup = function() {
  this.array1 = Array(100);
  this.array2 = Array(100);

suguru03

function combinationLoop(list, choose, callback) {
  (function loop(result, nest, index, length) {
    while (index <= length + nest - choose) {
      (nest === 0 ? (result = []) : result)[nest] = list[index++];
      if (nest < choose - 1) {
        loop(result, nest + 1, index, length);
      } else {
        callback(result.concat()); // 状況に応じて不要
      }
    }