Created
May 11, 2017 15:52
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| var combine = function(a, min) { | |
| var fn = function(n, src, got, all) { | |
| if (n == 0) { | |
| if (got.length > 0) { | |
| all[all.length] = got; | |
| } | |
| return; | |
| } | |
| for (var j = 0; j < src.length; j++) { | |
| fn(n - 1, src.slice(j + 1), got.concat([src[j]]), all); | |
| } | |
| return; | |
| } | |
| var all = []; | |
| for (var i = min; i < a.length; i++) { | |
| fn(i, a, [], all); | |
| } | |
| all.push(a); | |
| return all; | |
| } |
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