[开心一刻] 程序员出租房子

Books, like friends, should be few and well chosen.
书籍和朋友，在好不在多。

说不定哪天还能用上

猜猜我想表达个啥？

public class RentOutRoom {
    public static void main(String[] args) {
        int[] arr = new int[]{6, 1, 5, 2, 8, 9};
        int[] index = new int[]{1, 4, 0, 5, 1, 1, 2, 5, 3, 3, 0};
        String tel = "";
        for (int i = index.length - 1; i >= 0; i--) {
            if ((i + 1) % 4 == 0) {
                tel += arr[index[i]] + "-";
            } else {
                tel += arr[index[i]];
            }
        }
        tel = new StringBuffer(tel).reverse().toString();
        System.out.println("联系方式："+tel);
    }
}