# JAVA复数的运算(类和对象)

xiaoxiao2021-02-28  1

import java.util.*; class Complex{ int real, image; Complex() { } public Complex(int real, int image) { this.real = real; this.image = image; } void cal(int r, int i, int a) { if(a == 1) { this.real += r; this.image += i; } else if(a == 2) { this.real -= r; this.image -= i; } else if(a == 3) { int re = this.real; int im = this.image; this.real = re * r - im*i; this.image = re*i + r*im; } } void out(){ if(real == 0&&image==0) { System.out.println("0"); } else if(real ==0 && image != 0){ if(image == 1) { System.out.println("i"); } else if(image == -1) { System.out.println("-i"); } else { System.out.println(image+"i"); } } else if(real != 0 && image == 0) { System.out.println(real); } else { if(image == 1) { System.out.println(real+"+i"); } else if(image == -1) { System.out.println(real+"-i"); } else if(image > 1){ System.out.println(real+"+"+image+"i"); } else { System.out.println(real+""+image+"i"); } } } } public class Main { public static void main(String[] args) { Scanner cin = new Scanner(System.in); int x,y,a; x = cin.nextInt(); y = cin.nextInt(); Complex complex = new Complex(x, y); while(cin.hasNext()) { x = cin.nextInt(); y = cin.nextInt(); a = cin.nextInt(); complex.cal(x, y, a); } complex.out(); } } ﻿﻿

### 复数的运算(类和对象)

Time Limit: 1000 ms Memory Limit: 65536 KiB Submit Statistic

#### Problem Description

复数相减举例： （1+2i）－（3+4i）= －2 － 2i     复数相乘举例： （1+2i）*（3+4i）= －5 + 10i 要求：对复数进行连环运算。

#### Sample Input

1 1 3 4 2 5 2 1 2 -1 3 0 2 2

5-7i