PAT_A 1083 List Grades
PAT_A 1083 List Grades
分析
题目要求将学生按成绩非递增排序,且题目中保证各个学生成绩不同,所以就是按照成绩降序排序。
最后需要输出成绩在指定区间内的学生的姓名与学号。
题目没有给出学生个数N
的范围,所以就猜了一个数,侥幸AC了。
题目的描述
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
AC的代码
#include
using namespace std;
class Person{
public:
char name[12],ID[12];
int grade;
Person(){};
};
bool cmp(Person a,Person b){
return a.grade > b.grade ? true : false;
}
int main(){
int N,g1,g2;
bool empty=false;
scanf("%d",&N);
array people;
for(int i=0;i=g1&&people[i].grade<=g2){
printf("%s %s\n",people[i].name,people[i].ID);
empty = true;
}
}
if(!empty){
printf("NONE\n");
}
return 0;
}