Question

如何批量生成1到100不重复的随机数

Answer 1

/*
7 29 89 2 63 35 34 82 96 87 69 6 44 12 5 93 4 67 46 83
Press any key to continue
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define N 20
int main() {
int i,j,flag,num,a[N];
srand((unsigned)time(NULL));
for(i = 0; i < N; ++i) {
num = rand()%98 + 1;
flag = 1;
for(j = 0; j < i; ++j) {
if(num == a[j]) {
flag = 0;;
break;
}
}
if(flag) a[i] = num;
else --i;
}
for(i = 0; i < N; ++i)
printf("%d ",a[i]);
printf("\n");
return 0;
}