hdu 5702 Solving Order（结构体排序 水题）

Posted 2020-08-02 qiqi_starsky

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=5702

Solving Order

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)

Total Submission(s): 184    Accepted Submission(s): 135

Problem Description

Welcome to HDU to take part in the first CCPC girls‘ competition!



As a pretty special competition, many volunteers are preparing for it with high enthusiasm.
One thing they need to do is blowing the balloons.

Before sitting down and starting the competition, you have just passed by the room where the boys are blowing the balloons. And you have found that the number of balloons of different colors are strictly different.

After thinking about the volunteer boys‘ sincere facial expressions, you noticed that, the problem with more balloon numbers are sure to be easier to solve.

Now, you have recalled how many balloons are there of each color.
Please output the solving order you need to choose in order to finish the problems from easy to hard.
You should print the colors to represent the problems.

 

Input

The first line is an integer T which indicates the case number.
And as for each case, the first line is an integer n, which is the number of problems.
Then there are n lines followed, with a string and an integer in each line, in the i-th line, the string means the color of ballon for the i-th problem, and the integer means the ballon numbers.

It is guaranteed that:
T is about 100.
1≤n≤10.
1≤ string length ≤10.
1≤ bolloon numbers ≤83.(there are 83 teams :p)
For any two problems, their corresponding colors are different.
For any two kinds of balloons, their numbers are different.

 

Output

For each case, you need to output a single line.
There should be n strings in the line representing the solving order you choose.
Please make sure that there is only a blank between every two strings, and there is no extra blank.

 

Sample Input

3
3
red 1
green 2
yellow 3
1
blue 83
2
red 2
white 1

 

Sample Output

yellow green red
blue
red white

 

Source

"巴卡斯杯" 中国大学生程序设计竞赛 - 女生专场

 

题目大意：把颜色由多到少进行排序，从大到小的输出。

解题思路：将变量存在结构体中，然后结构体排序即可。还需要注意格式的问题。

详见代码。

#include <iostream>
#include <cstdio>
#include <algorithm>

using namespace std;

struct node
{
    char ch[110];
    int num;
}s[110];

bool cmp(node a,node b)
{
    return a.num>b.num;
}

int main()
{
    int t;
    scanf("%d",&t);
    while (t--)
    { 
        int n;
        scanf("%d",&n);
        for (int i=0;i<n;i++)
        {
            scanf("%s%d",s[i].ch,&s[i].num);
        }
        sort(s,s+n,cmp);
        for (int i=0;i<n;i++)
        {
            printf("%s%c",s[i].ch,i!=n-1?' ':'\n');
        }
    }
    return 0;
}