产生随机数，进行简单的四则运算。
组内成员：于淼 刘芳芳
package nenu.softWareProject;import java.util.Random;import java.util.Scanner;public class PairWork1_calculator {	public static void main(String[] args) {		int n=10;				int max=100;        int min=1;        Random random = new Random();		for(int o=1;o<=n;o++){			//产生小于等于30的随机数			int  a = random.nextInt(max)%(max-min+1) + min;			int  b = random.nextInt(max)%(max-min+1) + min;						//产生1 2 3 4随机数分别代表加减乘除			Random sig = new Random();			int s = sig.nextInt(4);			//加法			if(s==1){				int ansJia=a+b;					System.out.println(a +"+" +b+"=");					Scanner scan1=new Scanner(System.in);					int  ans =scan1.nextInt();					if(ans==ansJia){						System.out.println("真棒！你做对了");					}else{						System.out.println("在仔细想想，你可以做对的！");					}					}	  //减			if(s==2){				if(a>b){					int ansJian=a-b;					System.out.println(a +"-" +b+"=");					Scanner scan2=new Scanner(System.in);					int  ans =scan2.nextInt();					if(ans==ansJian){						System.out.println("真棒！你做对了");					}else{						System.out.println("在仔细想想，你可以做对的！");					}					}else{						int ansJian=b-a;						System.out.println(b +"-" +a+"=");						Scanner scan2=new Scanner(System.in);						int  ans =scan2.nextInt();						if(ans==ansJian){							System.out.println("真棒！你做对了");						}else{							System.out.println("在仔细想想，你可以做对的！");						}					}				}			//乘			if(s==3){				int ansCheng=a*b;				System.out.println(a +"*" +b+"=");				Scanner scan3=new Scanner(System.in);				int  ans =scan3.nextInt();				if(ans==ansCheng){					System.out.println("真棒！你做对了");				}else{					System.out.println("在仔细想想，你可以做对的！");				}			}			//除			if(s==4){					double ansChu=(double)(Math.round(a/b)/100.0);					System.out.println(a +"*" +b+"=");					Scanner scan4=new Scanner(System.in);					int  ans =scan4.nextInt();					if(ans==ansChu){						System.out.println("真棒！你做对了");					}else{						System.out.println("在仔细想想，你可以做对的！");					}			}					}			}			}

运行结果为：