28 lines
892 B
Plaintext
28 lines
892 B
Plaintext
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(function "cmp" (i: int j: int)
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(- i j))
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(function "quick" (lo: int hi: int a: addr cmp: addr)
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(if (< lo hi)
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(let (i lo
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j hi
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pivot (addraref a hi))
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(while (< i j)
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(while (if (< i hi) (<= (app cmp [(addraref a i) pivot] int) 0) 0)
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(assign i (+ i 1)))
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(while (if (> j lo) (>= (app cmp [(addraref a j) pivot] int) 0) 0)
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(assign j (- j 1)))
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(if (< i j)
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(let temp (addraref a i)
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(addraset a i (addraref a j))
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(addraset a j temp))
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[]))
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(let temp (addraref a i)
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(addraset a i (addraref a hi))
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(addraset a hi temp))
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(app "quick" [lo (- i 1) a cmp] unit)
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(app "quick" [(+ i 1) hi a cmp] unit))
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[]))
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(function "quicksort" (lo: int hi: int a: addr)
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(app "quick" [lo hi a "cmp"] unit))
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