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Cod sursa(job #762899)
/*
Algoritm de sortare prin comparare - QuickSort.
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define MAX 500000
int numere[MAX];
void interschimb (int *a, int *b) {
int aux;
aux = *a;
*a = *b;
*b = aux;
}
void quicksort (int start, int stop) {
int i = start - 1;
int j = stop;
int temp = numere[(i + j) / 2];
while (1) {
while (numere[i] < temp)
i++;
while (numere[j] > temp)
j--;
if (i > j)
break;
else {
interschimb(&numere[i], &numere[j]);
i++;
j--;
}
}
if (start < j)
quicksort(start, j);
if (i < stop)
quicksort(i, stop);
}
int main () {
int n;
int i;
freopen("algsort.in", "r", stdin);
freopen("algsort.out", "w", stdout);
scanf("%d", &n);
for (i = 0; i < n; i++)
scanf("%d", &numere[i]);
quicksort(0, n - 1);
for (i = 0; i < n; i++)
printf("%d ", numere[i]);
return 0;
}