C语言 C 生成不重复的随机数
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C Generate random numbers without repetition
提问by user3552818
I want to generate random numbers between 1 and 13 without repetition I used this method, but it doesn't make sure there is no reputation.
我想在不重复的情况下生成 1 到 13 之间的随机数我使用了这种方法，但它并不能确保没有声誉。
for ( i = 0; i < 13; i++)
{
array[i] = 1 + (rand() % 13);
}
Please help me. C language
请帮我。C语言
回答by Brian Tracy
As a comment said, Fill an array with numbers 1 through 13 then shuffle the array.
正如评论所说， Fill an array with numbers 1 through 13 then shuffle the array.
int array[13];
for (int i = 0; i < 13; i++) { // fill array
array[i] = i;
printf("%d,", array[i]);
}
printf("\n done with population \n");
printf("here is the final array\n");
for (int i = 0; i < 13; i++) { // shuffle array
int temp = array[i];
int randomIndex = rand() % 13;
array[i] = array[randomIndex];
array[randomIndex] = temp;
}
for (int i = 0; i < 13; i++) { // print array
printf("%d,",array[i]);
}
Here is the sample output.
这是示例输出。
0,1,2,3,4,5,6,7,8,9,10,11,12,
done with population
here is the final array
11,4,5,6,10,8,7,1,0,9,2,12,3,
Note: I used the most basic sort I could. Use a better one if you want.
注意：我尽可能使用了最基本的排序。如果需要，请使用更好的。
