code: function unzip (arrays) {
    var result = []
    var index = 0
    var len = XEUtils.max(arrays, function (item) {
      return item.length || 0
    }).length
    for (; index < len; index++) {
      result.push(arrayMap(arrays, index))
    }
    return result
  }
docs: 与 zip 相反
  
  @param {Array} arrays 数组集合