java小算法计算π
public static void main(String[] args) {
int i=0;
int b1=0;
int b2=0;
while(i<214748364){
double a1=2*Math.random()-1;
double a2=2*Math.random()-1;
double a3=a1*a1+a2*a2;
if(a3<1){
b1++;
}
b2++;
i++;
}
System.out.println(4*((double)b1/(double)b2));
}