1083 List Grades （25 分）
Given a list of N student records with name, ID and grade. You are supposed to sort the records with respect to the grade in non-increasing order, and output those student records of which the grades are in a given interval.
Input Specification:
Each input file contains one test case. Each case is given in the following format:
N
name[1] ID[1] grade[1]
name[2] ID[2] grade[2]
... ...
name[N] ID[N] grade[N]
grade1 grade2
where name[i] and ID[i] are strings of no more than 10 characters with no space, grade[i] is an integer in [0, 100], grade1 and grade2 are the boundaries of the grade‘s interval. It is guaranteed that all the grades are distinct.
Output Specification:
For each test case you should output the student records of which the grades are in the given interval [grade1, grade2] and are in non-increasing order. Each student record occupies a line with the student‘s name and ID, separated by one space. If there is no student‘s grade in that interval, output NONE instead.
Sample Input 1:
4
Tom CS000001 59
Joe Math990112 89
Mike CS991301 100
Mary EE990830 95
60 100
Sample Output 1:
Mike CS991301
Mary EE990830
Joe Math990112
Sample Input 2:
2
Jean AA980920 60
Ann CS01 80
90 95
Sample Output 2:
NONE
1 #include<iostream>
2 #include<set>
3 #include<string>
4
5 using namespace std;
6
7 struct student
8 {
9 string name;
10 string ID;
11 int grade;
12
13 bool operator<(const student stu) const
14 {
15 if(grade < stu.grade)
16 return true;
17 else
18 return false;
19 }
20
21 bool operator>(const student stu) const
22 {
23 if(grade > stu.grade)
24 return true;
25 else
26 return false;
27 }
28 };
29
30 int main()
31 {
32 int N ,flag = 1,grade1,grade2;
33 student stu;
34 set<student> s;
35
36 cin>>N;
37
38 for(int i=0;i<N;++i)
39 {
40 cin>>stu.name>> stu.ID>>stu.grade;
41
42 s.insert(stu);
43 }
44
45 cin>>grade1>>grade2;
46
47 set<student>::reverse_iterator begin = s.rbegin(),end = s.rend(),i;
48
49 for(i=begin;i!=end;++i)
50 {
51 if((*i).grade >= grade1 && (*i).grade <= grade2)
52 {
53 cout<<i->name<<" "<<i->ID<<endl;
54 flag = 0;
55 }
56 }
57
58 if(flag)
59 cout<<"NONE"<<endl;
60 }
原文地址：https://www.cnblogs.com/cdp1591652208/p/10227778.html