如果用JAVA实现37选7

class Caipiao
{

public int[] getValue(){
int[] return_val = new int [7];
int i = 1;
int j = 0;
return_val[0] = (int)(Math.random()*37)+1;
while(i<7){
int r = (int)(Math.random()*37)+1;
for(j = 0;j<i;j++){
if(r==return_val[j]) break;
}
if(i!=j) continue;
return_val[i] = r;
i++;
}
return return_val;
}
public static void main(String[] args)
{
int[] v = new Caipiao().getValue();
for(int i = 0 ; i < 7 ;i++){
System.out.print(v[i]+" ");
}
}
}