11 lines
367 B
Text
11 lines
367 B
Text
# If A and B are sets, then intersection(A;B) emits their intersection:
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def intersection($A;$B):
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def pop:
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.[0] as $i
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| .[1] as $j
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| if $i == ($A|length) or $j == ($B|length) then empty
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elif $A[$i] == $B[$j] then $A[$i], ([$i+1, $j+1] | pop)
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elif $A[$i] < $B[$j] then [$i+1, $j] | pop
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else [$i, $j+1] | pop
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end;
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[[0,0] | pop];
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