Find all combinations of two arrays

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长情又很酷 2021-02-15 17:02

I am trying to find all the combination of two arrays, but with an important variation:

Each value of the second array needs to be spread out over the val

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Happy的楠姐 (楼主)

2021-02-15 17:46

My suggestion is to try and code exactly what you are asking for:

function clone(arr) {
  var copy = new Array(arr.length);
  for (var i=0; i



Output:

"[[[1,2,3],[]],[[1,2],[3]],[[1,3],[2]],[[1],[2,3]],[[2,3],[1]],[[2],[1,3]],[[3],[1,2]]
,[[],[1,2,3]]]" 

"[[[1,2,3],[],[]],[[1,2],[3],[]],[[1,2],[],[3]],[[1,3],[2],[]],[[1],[2,3],[]]
,[[1],[2],[3]],[[1,3],[],[2]],[[1],[3],[2]],[[1],[],[2,3]],[[2,3],[1],[]],[[2],[1,3],[]]
,[[2],[1],[3]],[[3],[1,2],[]],[[],[1,2,3],[]],[[],[1,2],[3]],[[3],[1],[2]],[[],[1,3],[2]]
,[[],[1],[2,3]],[[2,3],[],[1]],[[2],[3],[1]],[[2],[],[1,3]],[[3],[2],[1]],[[],[2,3],[1]]
,[[],[2],[1,3]],[[3],[],[1,2]],[[],[3],[1,2]],[[],[],[1,2,3]]]"