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December 19, 2015 23:59
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Cartesian product coffeescript
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| cartProd = (paramArray) -> | |
| addTo = (curr, args) -> | |
| rest = args.slice(1) | |
| last = not rest.length | |
| result = [] | |
| i = 0 | |
| while i < args[0].length | |
| copy = curr.slice() | |
| copy.push args[0][i] | |
| if last | |
| result.push copy | |
| else | |
| result = result.concat(addTo(copy, rest)) | |
| i++ | |
| result | |
| addTo [], Array::slice.call(arguments_) |
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