leetcode 解题思路

这题是Geohash的加强版 将一个字符串用Geohash的逆运算求出latitude和longitude Geohash细节见帮助Geohash或者wikiGeoHash Example 样例1 输入: "wx4g0s"` 输出: lat = 39.92706299 and lng = 116.39465332 样例2 输入: "w" 输出: lat = 22.5000000...

根据wiki algorithmhttps://en.wikipedia.org/wiki/Geohash 思路:纯算法实现；32位字符： 0~9 , a~z; 字符去掉了 a,i, l, o; // since pricision biggest is 12, each char using 5 digit which is total 60; // ...