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pta练习 阅读全文
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package API使用及概述; import java.util.Scanner; public class API { public static void main(String[] args) { Scanner sc = new Scanner(System.in); double f 阅读全文
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package 对象数组; public class Student { private int id; private String name; private int age; package 对象数组; import java.util.Scanner; public class Studen 阅读全文