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#include "xwrap.h"
#include <inttypes.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
static int qsort_cb (const void* a, const void* b) {
int32_t aa = *(int32_t*)a;
int32_t bb = *(int32_t*)b;
if (aa > bb) {
return 1;
} else if (aa < bb) {
return -1;
} else {
return 0;
}
}
static void print_seq (FILE* fp, int32_t* s, long len) {
for (int i = 0; i < len; i++) {
if (i) {
putc (' ', fp);
}
fprintf (fp, "%" PRId32, s[i]);
}
putc ('\n', fp);
}
int main (int argc, char* argv[]) {
if (argc < 2) {
fprintf (stderr, "Usage: %s length\n", argv[0]);
return 1;
}
long len;
if (xatol (argv[1], &len) < 0) {
fprintf (stderr, "%s: %s is not a valid length\n", argv[0], argv[1]);
return 2;
}
if (len <= 0) {
fprintf (stderr, "%s: %s is not a positive number\n", argv[0], argv[1]);
return 2;
}
srandom (time (NULL) + getpid () + getppid () + getuid ());
int32_t* s = xmalloc (sizeof (int32_t) * len);
for (long i = 0; i < len; i++) {
s[i] = random ();
}
printf ("%ld\n", len);
print_seq (stdout, s, len);
qsort (s, len, sizeof (int32_t), qsort_cb);
print_seq (stderr, s, len);
free (s);
return 0;
}
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