题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
#include <stdio.h>
#define MAX_TABLE_SIZE 128
int main()
{
char hash[MAX_TABLE_SIZE] = {-1};
char c = 0;
int num = 0;
while(~scanf("%c", &c))
{
if (c == '\n')
break;
if (hash[(int)c] != c)
{
hash[(int)c] = c;
num++;
}
}
printf("%d\n", num);
return 0;
}
查看1道真题和解析