package text1;
public class P1 { public static void gs(Object obj){ System.out.println(obj);}public static void main(String[] args){ int count = 0;for(int i=0;i<300;i++){ int a = (int)(Math.random()*100);//随机数int b = (int)(Math.random()*100);int c = (int)(Math.random()*100);int j=1;if(0<=c&&c<10)j=1;else if(10<=c&&c<20)j=2;else if(20<=c&&c<30)j=3;else if(30<=c&&c<40)j=4;else if(40<=c&&c<50)j=5;else if(50<=c&&c<60)j=6;else if(60<=c&&c<70)j=7;else if(70<=c&&c<80)j=8;else if(80<=c&&c<90)j=9;else j=10;switch(j){ case 1:gs(a + "+" + b + "=");break;case 2:gs(a + "-" + b + "=");break; case 3:gs(a + "*" + b + "=");break;case 4:gs(a + "/" + b + "=");break;}count++;} gs("一共有:"+count+"四则运算题目");}public static void jf(int a,int b){ if(a>=b)gs(a + "-" + b + "=");else{ gs(b + "-" + a + "=");}}public static void cf(int a,int b){ if(b>0)gs(a + "/" + b + "=");else{ b=b+1;gs(a + "/" + b + "=");}}}