public class fournum {
public static void main(String[] args) {
int[] num = new int[4];
for (int i = 0; i < 4; i++) {
num[i] = (int)Math.floor(Math.random()*10);
for(int j=0;j<i;j++){
while(num[i]==num[j])
num[i] = (int)Math.floor(Math.random()*10);
}
}
int answer = num[0]*1000+num[1]*100+num[2]*10+num[3];
System.out.println(answer);
System.out.println((int)Math.floor(Math.random()*10));
}
public fournum() {
// TODO Auto-generated constructor stub
}
}
可以直接运行