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java编写四则运算

import java.text.DecimalFormat; import java.util.Scanner; public class Zhidao { public static void main(String[] args) { String condition = ""; Zhidao zhidao = new Zhidao(); do{ Scanner scanner = new Scanner(System.in); try{ Sy...

实现加法的类,重载实现int double的加法运算,减乘除可参照实现。public class Calculator {public static double calculatorPlus(double d1,double d2){return d1 + d2;}public static int calculatorPlus(int d1,int d2){return d1 + d2;}}

import java.text.DecimalFormat; import java.util.Scanner; public class Zhidao { public static void main(String[] args) { String condition = ""; Zhidao zhidao = new Zhidao(); do{ Scanner scanner = new Scanner(System.in); try{ Sy...

package day20; import java.awt.Font; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import ...

class Class1 { public static void main(String[] args) { System.out.println("Hello World!"); //中缀 => 后缀表达式 String s = "( 1.9 + (20 + 41) / (25 * 11) - 3 ) * 2"; //中缀 String S = ""; //后缀 char[] Operators = new char[s.l...

import javax.swing.*;import java.awt.*;import java.awt.event.*;public class Buju extends JFrame implements ActionListener{private static final long serialVersionUID = 1L;JTextField text1, text2;JButton but1, but2, but3, but4;JL...

import java.util.*;public class Test{public static void main(String...args){ArrayList al=new ArrayList();System.out.println("请输入要计算的式子个数:");Scanner sc=new Scanner(System.in);int count=sc.nextInt();System.out.println(...

import java.util.Scanner; public class 四则运算 { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.print("请输入第一个数字:"); int a = sc.nextInt(); System.out.print("请输入字符:"); Str...

import java.util.*;import java.awt.*;import java.awt.event.*;import javax.swing.*;import java.applet.*;public class Demo03 extends JApplet implements ActionListener {boolean i = true;private JButton num0 = new JButton("0");priv...

一楼讲得比较清楚,你要建立一个对照表例如一对应的是 1 ,千对应的是 1000,百对应的是 100,当你输入一万的时候分析你输入的字符串,一万一千一百 加 一 → ()10000 + 1000 + 100) + 1、 按照这个原理可以编写其他的数字跟字符,输入完整的...

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