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authormanuel <manuel@mausz.at>2012-03-27 11:51:08 +0200
committermanuel <manuel@mausz.at>2012-03-27 11:51:08 +0200
commit4f670845ff9ab6c48bcb5f7bf4d4ef6dc3c3064b (patch)
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1/* sort.c
2
3 Test program to sort a large number of integers.
4
5 Intention is to stress virtual memory system.
6
7 Ideally, we could read the unsorted array off of the file
8 system, and store the result back to the file system! */
9#include <stdio.h>
10
11/* Size of array to sort. */
12#define SORT_SIZE 128
13
14int
15main (void)
16{
17 /* Array to sort. Static to reduce stack usage. */
18 static int array[SORT_SIZE];
19
20 int i, j, tmp;
21
22 /* First initialize the array in descending order. */
23 for (i = 0; i < SORT_SIZE; i++)
24 array[i] = SORT_SIZE - i - 1;
25
26 /* Then sort in ascending order. */
27 for (i = 0; i < SORT_SIZE - 1; i++)
28 for (j = 0; j < SORT_SIZE - 1 - i; j++)
29 if (array[j] > array[j + 1])
30 {
31 tmp = array[j];
32 array[j] = array[j + 1];
33 array[j + 1] = tmp;
34 }
35
36 printf ("sort exiting with code %d\n", array[0]);
37 return array[0];
38}