816. 模糊坐标

816. 模糊坐标

题解：

1. 暴力枚举 两个点
2. 判断小数点前 是否 有前导零， 判断小数点后 是否 有后置0

class Solution {
    public List<String> ambiguousCoordinates(String s) {
        s = s.substring(1, s.length() - 1);
        List<String> res = new ArrayList<>();
        for (int i = 1; i < s.length(); i++) {
            List<String> x = get(s.substring(0, i));
            List<String> y = get(s.substring(i));
            for (String x1 : x) {
                for (String s1 : y) {
                    res.add("(" + x1 + ", " + s1 + ")");
                }
            }
        }
        return res;
    }

    public List<String> get(String s) {
        List<String> res = new ArrayList<>();
        if (s.length() == 1 || s.charAt(0) != '0') res.add(s);
        for (int i = 1; i < s.length(); i++) {
            String a = s.substring(0, i);
            String b = s.substring(i);
            if (a.length() > 1 && a.charAt(0) == (int)'0') continue;
            if (b.charAt(b.length() - 1) == (int)'0') continue;
            res.add(a + "." + b);
        }
        return res;
    }

}