socksInDryer.js

function pickDryer(){
  return Math.floor((Math.random() * 2) );
}

function placePairs (num){
  var pairs = [];
  for (l=0; l<num; l++){
    pairs[l]=new Array(2);
  }
  var results = [];
  for (i = 0; i < num; i++){
      pairs[i][0] = pickDryer();
      pairs[i][1] = pickDryer();
  }
  for (i = 0; i < pairs.length; i++){
      results[i] = Math.abs(pairs[i][0] - pairs[i][1]);
  }
  return (results.indexOf(0) >= 0);
}

function simulate(num, pairs){
  var counter = 0;
  for (j=0; j<num; j++){
  if (placePairs(pairs) === false){
    counter = counter + 1;
  }
}
  return counter;
}