测试数据有多组,第一行为样例数m。对于每个样例,第一行为学生人数n(n不超过20),接下来n行每行4个整数分别表示学号、姓名、性别和年龄,最后一行表示查询的学号。
输出m行,每行表示查询的学生信息,格式参见样例。
1 4 1 李江 男 21 2 刘唐 男 23 3 张军 男 19 4 王娜 女 19 2
2 刘唐 男 23
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; public class Main { static class student { int id; String name; String gender; int age; public student(int id, String name, String gender, int age) { this.id = id; this.name = name; this.gender = gender; this.age = age; } @Override public String toString() { return id + " " + name + " " + gender + " " + age; } } public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); int n = Integer.parseInt(br.readLine()); for (int i = 0; i < n; i++) { int num = Integer.parseInt(br.readLine()); ArrayList<student> list = new ArrayList<>(); for (int j = 0; j < num; j++) { String[] s = br.readLine().split(" "); int id = Integer.parseInt(s[0]); String name = s[1]; String gender = s[2]; int age = Integer.parseInt(s[3]); student st = new student(id, name, gender, age); list.add(st); } int aim = Integer.parseInt(br.readLine()); System.out.println(list.get(aim - 1)); } } }
import java.util.HashMap; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int m = scanner.nextInt(); for (int i = 0; i < m; i++) { int n = scanner.nextInt(); HashMap<Integer, Student> map = new HashMap<>(); for (int j = 0; j < n; j++) { int id = scanner.nextInt(); map.put(id,new Student(id,scanner.next(),scanner.next(),scanner.nextInt())); } int search = scanner.nextInt(); System.out.println(map.get(search)); } } static class Student{ Integer id; String name; String sex; Integer age; public Student(Integer id, String name, String sex, Integer age) { this.id = id; this.name = name; this.sex = sex; this.age = age; } @Override public String toString() { return id+" "+name+" "+sex+" "+age; } } }