UVA-11462 Age Sort

计数排序

#include <cstdio>
#include <cstring>

using namespace std;

int A[100], n;
int main() {
    while (scanf("%d", &n) && n) {
        memset(A, 0, sizeof(A)); //memset的使用
        for (int i = 0; i < n; ++i) {
            int t;
            scanf("%d", &t);
            A[t]++;
        }

        bool first = true;
        for (int i = 0; i < 100; ++i) {
            for (int j = 0; j < A[i]; ++j) {
                if (first)
                    printf("%d", i), first = false;
                else
                    printf(" %d", i);
            }
        }
        puts("");  //这个默认带\n，putchar()不带
    }
}