抽奖程序

Random.nextInt(400000）
int a;
int b;
int c;
int d;
int e;
int f;

for(int i=0;i<400000;i++){
if (i<10){
    a++;
}else if(i>=10 && i<200){
    b++;
}else if(i>=200 && i<3000){
    c++;
}else if(i>=3000 && i < 15000){
    d++;
}else if(i>=15000 && i < 150000){
    e++;
}else if(i>=150000&& i < 400000){
    f++;
}
System.out.println((double)a/400000);
System.out.println((double)b/400000);
System.out.println((double)c/400000);
System.out.println((double)d/400000);
System.out.println((double)e/400000);
System.out.println((double)f/400000);
}