zoukankan      html  css  js  c++  java
  • PAT Advanced 1120 Friend Numbers (20分)

    Two integers are called "friend numbers" if they share the same sum of their digits, and the sum is their "friend ID". For example, 123 and 51 are friend numbers since 1+2+3 = 5+1 = 6, and 6 is their friend ID. Given some numbers, you are supposed to count the number of different friend ID's among them.

    Input Specification:

    Each input file contains one test case. For each case, the first line gives a positive integer N. Then N positive integers are given in the next line, separated by spaces. All the numbers are less than 1.

    Output Specification:

    For each case, print in the first line the number of different frind ID's among the given integers. Then in the second line, output the friend ID's in increasing order. The numbers must be separated by exactly one space and there must be no extra space at the end of the line.

    Sample Input:

    8
    123 899 51 998 27 33 36 12
    
     

    Sample Output:

    4
    3 6 9 26

    这题考察朋友数,也就是各位相加就是朋友数,我们使用一个judge数组进行映射即可。

    #include <iostream>
    #include <vector>
    using namespace std;
    bool judge[10000] = {0};
    int main() {
        int N, tmp, sum;
        scanf("%d", &N);
        for(int i = 0; i < N; i++){
            sum = 0;
            scanf("%d", &tmp);
            while(tmp != 0) {
                sum += (tmp%10);
                tmp /= 10;
            }
            judge[sum] = 1;
        }
        vector<int> ans;
        for(int i = 0; i < 10000; i++)
            if(judge[i]) ans.push_back(i);
        for(int i = 0; i < ans.size(); i++)
            if(i == 0) printf("%d
    %d", ans.size(), ans[i]);
            else printf(" %d", ans[i]);
        return 0;
    }
  • 相关阅读:
    驱动_spi驱动框架
    代码示例_陀螺仪_I2C
    控制台查看 pip 版本的指令
    更新升级(upgrade) pip 出错问题解决
    105. 从前序和中序遍历序列构造二叉树
    TCP初步了解
    Java GUI 之 JSplitPane
    URL的含义
    JPanel与JFrame的关系
    IDEA禁用函数名拼写错误提示
  • 原文地址:https://www.cnblogs.com/littlepage/p/12249018.html
Copyright © 2011-2022 走看看