Typescript | 二维数组（泛型）矩阵行列互换

/*
 * @Author: Prpr_Saber
 * @Date: 2018-11-02 17:06:29 
 * @Last Modified by: Prpr_Saber
 * @Last Modified time: 2018-11-02 21:41:47
 */
export let transformArray: <Type>(
  arr: Type[][]
) => Type[][] = function transformArray<Type>(arr: Type[][]): Type[][] {
  let newArray: Array<Array<Type>> = new Array<Array<Type>>()
  let raws = arr.length
  let raw = 0
  for (; raw < raws; raw++) {
    newArray.push([])
    let col = 0
    let cols = arr[raw].length
    for (; col < cols; col++) {
      newArray[raw][col] = arr[col][raw]
    }
  }
  return newArray
}