- for(int n=0;n<r;n++)
- {
- a=lianxi.f();
- b=lianxi.f();
- int i=(int)(Math.random()*100);
- int j=(int)(Math.random()*100);
- switch((int)(Math.random()*4))
- {
- case 0:
- k=(int)(Math.random()*3);
- if(k==0)
- System.out.println(i+"+"+j+"=");
- else if(k==1)
- System.out.println(a+"+"+j+"=");
- else if(k==2)
- System.out.println(b+"+"+a+"=");
- break;
- case 1:
- k=(int)(Math.random()*3);
- if(i<j)
- {
- int temp=i;
- i=j;
- j=temp;
- }
- if(k==0)
- System.out.println(i+"-"+j+"=");
- else if(k==1)
- System.out.println(j+"-"+a+"=");
- else if(k==2)
- System.out.println(b+"-"+a+"=");
- break;
- case 2:
- k=(int)(Math.random()*3);
- if(k==0)
- System.out.println(i+"*"+j+"=");
- else if(k==1)
- System.out.println(a+"*"+j+"=");
- else if(k==2)
- System.out.println(b+"*"+a+"=");
- break;
- case 3:
- while(j==0)
- j= (int)(Math.random()*100);
- System.out.println(i+"/"+j+"=");
- break;
来源: http://www.bubuko.com/infodetail-2533662.html