Rev | Line | |
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[37] | 1 | function y = all_ntuples(k,n) |
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| 2 | % Pick all k-tuples of numbers less than n. Order is not important. |
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| 3 | % Output is a matrix that is n choose k rows and k columns. |
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| 4 | if k > n | k < 2 |
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| 5 | if k == 1 |
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| 6 | y = (1:n)'; |
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| 7 | else |
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| 8 | y = [] |
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| 9 | end |
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| 10 | else |
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| 11 | if k == n |
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| 12 | y = 1:n; |
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| 13 | else |
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| 14 | smallertups = all_ntuples(k-1, n-1); |
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| 15 | smallertups_and_n = [(repeat(n,size(smallertups,1)))',smallertups]; |
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| 16 | y = [smallertups_and_n', (all_ntuples(k,n-1))']'; |
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| 17 | end |
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| 18 | end |
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