C语言学习： 数组打乱

#include <stdio.h>
#include "io_utils.h"
#include <stdlib.h>
#include <time.h>

#define PLAYER_COUNT 50

void SwapElement(int array[], int first, int second){
  int temp=array[first];
  array[first]=array[second];
  array[second]=temp;
}
void Function_suf(int array[],int size){
  srand(time(NULL));
  for (int i = 0; i < size; ++i) {
    int rand_number=rand()%size;
    SwapElement(array,i,rand_number);
  }
}

void Function_suf1(int array[],int size){
  srand(time(NULL));
  for (int i = size; i >0; i--) {
    int rand_number=rand()%i;
    SwapElement(array,i,rand_number);
  }
}

int main() {
  int players[PLAYER_COUNT];
  for (int i = 0; i < PLAYER_COUNT; ++i) {
    players[i]=i;
  }

  PRINT_INT_ARRAY(players,PLAYER_COUNT);
  Function_suf1(players,PLAYER_COUNT);
  PRINT_INT_ARRAY(players,PLAYER_COUNT);
  return 0;
}