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Cod sursa(job #688108)
// ShellSort
#include <stdio.h>
FILE *f=fopen("algsort.in", "r"), *g=fopen("algsort.out", "w");
long a[500001], n;
void citeste(void)
{
fscanf(f, "%ld", &n);
for(long i=0;i<n;i++)
fscanf(f, "%ld", &a[i]);
fclose(f);
}
void quickSort(int left, int right) {
long i = left, j = right;
long tmp;
long pivot = a[(left + right) / 2];
/* partition */
while (i <= j) {
while (a[i] < pivot)
i++;
while (a[j] > pivot)
j--;
if (i <= j) {
tmp = a[i];
a[i] = a[j];
a[j] = tmp;
i++;
j--;
}
};
/* recursion */
if (left < j)
quickSort(left, j);
if (i < right)
quickSort(i, right);
}
void tipareste(void)
{
for(long i=0;i<n;i++)
fprintf(g, "%ld ", a[i]);
fclose(g);
}
int main()
{
citeste();
quickSort(0, n-1);
tipareste();
return 0;
}