/* nag_ran_sample_vec (g05ejc) 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  exit_status = 0;
  Integer  i, n, m, k;
  Integer  ia[NMAX], ib[NMAX];
  Integer  seed = 0;
  NagError fail;

  INIT_FAIL(fail);

  printf("nag_ran_sample_vec (g05ejc) 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;

  for (i = 0; i < n; ++i)
    ia[i] = i;

  printf("\nSamples from the first %ld integers \n\n", n);
  printf("Sample size            Values \n");

  for (m = 1; m <= n; ++m)
    {
      /* nag_ran_sample_vec (g05ejc).
       * Pseudo-random sample without replacement from an integer
       * vector
       */
      nag_ran_sample_vec(ia, n, ib, m, &fail);
      if (fail.code != NE_NOERROR)
        {
          printf("Error from nag_ran_sample_vec (g05ejc) %s\n",
                  fail.message);
          exit_status = 1;
          goto END;
        }
      printf("     %ld                   ", m);
      for (k = 0; k < m; ++k)
        printf("%ld  ", ib[k]);
      printf("\n");
    }

 END:
  return exit_status;
}