7 lines
143 B
APL
7 lines
143 B
APL
comb←{(⍺=0)∨⍺=⍵:⌷⍉⍪⍳⍺ ⋄ (0,1+(⍺-1)∇ ⍵-1)⍪1+⍺ ∇ ⍵-1}
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4 comb 5
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0 1 2 3
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0 1 2 5
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0 1 4 5
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0 3 4 5
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2 3 4 5
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