javascript - 2 个数组的笛卡尔积

Question

我有 2 个数组，我想要它们的笛卡尔积。例如:

客户数组:

[10,A]
[11,B]

债务人数组:

[88,W]
[99,X]

我想生成一个新的 customerDebtor 数组:

[10,A,88,W]
[10,A,99,X]
[11,B,88,W]
[11,B,99,X]

我正在尝试使用这段代码:

for (var i = 0; i < customerArray.length; i++) {
    for (var l = 0; l < debtorArray.length; l++) {
        $.each(customerArray[i], function (ndx, val) {
            //???? push values into customerDebtorMatrix array
        });
    }
}

Answer 1

你不需要 jquery:

var customerArray = [[10,'A'],[11,'B']];
var debtorArray = [[88,'W'],[99,'X']];

var customerDebtorMatrix = [];
for (var i = 0; i < customerArray.length; i++) {
    for (var l = 0; l < debtorArray.length; l++) {
        customerDebtorMatrix.push(customerArray[i].concat(debtorArray[l]));
    }
}

customerDebtorMatrix 将是

[ [ 10, 'A', 88, 'W' ],
  [ 10, 'A', 99, 'X' ],
  [ 11, 'B', 88, 'W' ],
  [ 11, 'B', 99, 'X' ] ]