题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
#include <stdio.h> int main() { char a; char b[999999]; int i = 0, j, k = 0; while ((a = getchar()) != '\n') { b[i] = a; for (j = 0; j < i; j++) { if (b[j] == a) { k++; break; } } i++; } printf("%d", i - k); return 0; }