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qsort [] = []
qsort (x:xs) = qsort (filter (< x) xs) ++ [x] ++ qsort (filter (>= x) xs)[edit]
void qsort(int a[], int lo, int hi) {
{
int h, l, p, t;
if (lo < hi) {
l = lo;
h = hi;
p = a[hi];
do {
while ((l < h) && (a[l] <= p))
l = l+1;
while ((h > l) && (a[h] >= p))
h = h-1;
if (l < h) {
t = a[l];
a[l] = a[h];
a[h] = t;
}
} while (l < h);
t = a[l];
a[l] = a[hi];
a[hi] = t;
qsort( a, lo, l-1 );
qsort( a, l+1, hi );
}
}