摘要:
import java.awt.Color;import java.awt.Dimension;import java.awt.Font;import java.awt.Toolkit;import java.awt.event.ActionEvent;import java.awt.event.A 阅读全文
摘要:
//随机生成小学四则运算 import java.util.Scanner;public class Arithmetic { public static void main(String[]args) { int n; String strsign = null; System.out.print 阅读全文