/* nag_ran_permut_vec (g05ehc) Example Program.
 *
 * Copyright 1992 Numerical Algorithms Group.
 *
 * Mark 3, 1992.
 */

#include <nag.h>
#include <stdio.h>
#include <nag_stdlib.h>
#include <nagg05.h>

#define NMAX 8

int main(void)
{
  Integer j, k, n, m;
  Integer index[NMAX];
  Integer seed = 0;

  Vprintf("nag_ran_permut_vec (g05ehc) Example Program Results\n");
  /* nag_random_init_repeatable (g05cbc).
   * Initialize random number generating functions to give
   * repeatable sequence
   */
  nag_random_init_repeatable(seed);
  n = NMAX;
  m = 10;

  Vprintf("\n%ld  Permutations of the first  %ld integers \n\n",
          m, n);
  for (j = 0; j < m; ++j)
    {
      /* construct index vector to be permuted */
      for (k = 0; k < n; ++k)
        index[k] = k;
      /* nag_ran_permut_vec (g05ehc).
       * Pseudo-random permutation of an integer vector
       */
      nag_ran_permut_vec(index, n, NAGERR_DEFAULT);
      for (k = 0; k < n; ++k)
        Vprintf("%ld   ",index[k]);
      Vprintf("\n");
    }
  return EXIT_SUCCESS;
}