84669 person learning
152542 person learning
20005 person learning
5487 person learning
7821 person learning
359900 person learning
3350 person learning
180660 person learning
48569 person learning
18603 person learning
40936 person learning
1549 person learning
1183 person learning
32909 person learning
给定一个Javascript二维数组，如何得到其笛卡尔积。var Test = new Array();Test[0] = new Array(1, 2, 3);Test[1] = new Array(4, 5, 6);
求大神解答！
业精于勤，荒于嬉;行成于思，毁于随。
改编了一个大神给的解决方案！
不就是循环一下么
function descartes(dimensionX, dimensionY) { var xLen,yLen; if(!(xLen = dimensionX.length) || !(yLen = dimensionY.length)) return []; var products = []; for(var i=0; i< xLen;i++){ for(var j=0;j
是这个意思么
function descartes(){ if( arguments.length < 2 ) return arguments[0] || []; return [].reduce.call(arguments, function(col, set) { var res = []; col.forEach(function(c) {set.forEach(function(s) { var t = [].concat( Array.isArray(c) ? c : [c] ); t.push(s); res.push(t); })}); return res; }); } descartes([1,2,3],[4,5,6],[7,8,9],[10,11,12]);
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
改编了一个大神给的解决方案！
不就是循环一下么
是这个意思么