如何以不同的组合排列数组?

循环每一个,然后将它们组合成一个数组。

脚本:

function test() {
  arr1 = ["s","m"]
  arr2 = ["Red","Black"]
  arr3 = ["1", "2"]

  arr1.forEach(x => {
    arr2.forEach(y => {
      arr3.forEach(z => {
        console.log([x, y, z]);
      });
    });
  });
}

输出:

  let a = ["s","m"]
  let b = ["Red","Black"]
  let c = ["1", "2"]


for(let i = 0 ; i < a.length ; i++){
    for(let j = 0 ; j < b.length ; j++){
        for(let k = 0 ; k < c.length ; k++){
            console.log(a[i], b[j], c[k])
           
        }
    }
}

可以制作3个嵌套循环,例如:

for (int i = 0; i<2; i++) {
       
       for(int j = 0; j<2; j++) {
           
           for(int k = 0; k<2; k++) {
               
               //put your code here
           }
       }
   }