code: function unsplit(keys, values) {
  	var i = 0;
  	var keysValues = {};
  
  	while (i < keys.length) {
  		keysValues[keys[i]] = values[i];
  		i++;
  	}
  
  	return keysValues;
  }
docs: ['a', 'b', 'c'] ['d', 'e', 'f'] -> { 'a': 'd', 'b': 'e', 'c': 'f' }