practice/blackjack/copy_pasta_test.c
2016-11-07 19:35:17 -07:00

80 lines
947 B
C

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <time.h>
static int rand_int(int n) {
int limit = RAND_MAX - RAND_MAX % n;
int rnd;
do {
rnd = rand();
}
while (rnd >= limit);
return rnd % n;
}
void shuffle(int *array, int n) {
int i, j, tmp;
for (i = n - 1; i > 0; i--) {
j = rand_int(i + 1);
tmp = array[j];
array[j] = array[i];
array[i] = tmp;
}
}
int main(void)
{
time_t t;
srand((unsigned) time(&t));
int i = 0;
int numbers[50];
for (i = 0; i < 50; i++)
numbers[i]= i;
shuffle(numbers, 50);
printf("\nArray after shuffling is: \n");
for ( i = 0; i < 50; i++)
printf("%d\n", numbers[i]);
return 0;
}