1028 List Sorting java

Excel can sort records according to any column. Now you are supposed to imitate this function.

Input Specification:

Each input file contains one test case. For each case, the first line contains two integers N (≤10​5​​) and C, where N is the number of records and C is the column that you are supposed to sort the records with. Then N lines follow, each contains a record of a student. A student's record consists of his or her distinct ID (a 6-digit number), name (a string with no more than 8 characters without space), and grade (an integer between 0 and 100, inclusive).

Output Specification:

For each test case, output the sorting result in N lines. That is, if C = 1 then the records must be sorted in increasing order according to ID's; if C = 2 then the records must be sorted in non-decreasing order according to names; and if C = 3 then the records must be sorted in non-decreasing order according to grades. If there are several students who have the same name or grade, they must be sorted according to their ID's in increasing order.

Sample Input 1:

3 1
000007 James 85
000010 Amy 90
000001 Zoe 60

Sample Output 1:

000001 Zoe 60
000007 James 85
000010 Amy 90

Sample Input 2:

4 2
000007 James 85
000010 Amy 90
000001 Zoe 60
000002 James 98

Sample Output 2:

000010 Amy 90
000002 James 98
000007 James 85
000001 Zoe 60

Sample Input 3:

4 3
000007 James 85
000010 Amy 90
000001 Zoe 60
000002 James 90

Sample Output 3:

000001 Zoe 60
000007 James 85
000002 James 90
000010 Amy 90

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class Main {
    /**
     * 最后一组数据运行超时
     * */
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String inputString = br.readLine();
        int n = Integer.parseInt(inputString.split("\s+")[0]);
        int c = Integer.parseInt(inputString.split("\s+")[1]);
        List<Student1028> student1028s = new ArrayList<>();
        for (int i=0; i<n; ++i) {
            Student1028 temp = new Student1028();
            String tempString = br.readLine();
            String[] eachString = tempString.split("\s+");
            temp.id = eachString[0];
            temp.name = eachString[1];
            temp.score = Integer.parseInt(eachString[2]);
            student1028s.add(temp);
        }
        if (c==1) {
            Collections.sort(student1028s, new MyCompare1());
        } else if (c==2) {
            Collections.sort(student1028s, new MyCompare2());
        } else {
            Collections.sort(student1028s, new MyCompare3());
        }
        for (int i=0; i<student1028s.size(); ++i) {
            Student1028 temp = student1028s.get(i);
            System.out.println(temp.id+" "+temp.name+" "+temp.score);
        }
    }
}


class MyCompare1 implements Comparator<Student1028> {

    @Override
    public int compare(Student1028 o1, Student1028 o2) {
        return o1.id.compareTo(o2.id);
    }
}
class MyCompare2 implements Comparator<Student1028> {

    @Override
    public int compare(Student1028 o1, Student1028 o2) {
        if (!o1.name.equals(o2.name)) {
            return o1.name.compareTo(o2.name);
        } else {
            return o1.id.compareTo(o2.id);
        }
    }
}
class MyCompare3 implements Comparator<Student1028> {

    @Override
    public int compare(Student1028 o1, Student1028 o2) {
        int score1 = o1.score;
        int score2 = o2.score;
        if (score1!=score2) {
            return o1.score.compareTo(o2.score);
        } else {
            return o1.id.compareTo(o2.id);
        }
    }
}

class Student1028{
    public String id;
    public String name;
    public Integer score;

    @Override
    public String toString() {
        return "Student1028{" +
                "id='" + id + ''' +
                ", name='" + name + ''' +
                ", score=" + score +
                '}';
    }
}

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