feat: add java solution to lcof problem

Author: yanglbme

README.md

@@ -20,8 +20,8 @@ Complete solutions to [LeetCode](https://leetcode-cn.com/problemset/all/), [LCCI
 [中文文档](./README_CN.md)
 
 ## Solution Tree
-- [LeetCode](https://github.com/doocs/leetcode/blob/master/solution/README.md)
-- [LCCI](https://github.com/doocs/leetcode/blob/master/lcci/README.md) / [LCOF](https://github.com/doocs/leetcode/blob/master/lcof/README.md)
+- [LeetCode](./solution/README.md)
+- [LCCI](./lcci/README.md) / [LCOF](./lcof/README.md)
 
 ## Contributions
 I'm looking for long-term contributors/partners to this repo! Send me [PRs](https://github.com/doocs/leetcode/pulls) if you're interested! See the following:

lcci/README.md

@@ -1,7 +1,7 @@
 # [《程序员面试金典（第 6 版）》系列](https://leetcode-cn.com/problemset/lcci/)
 本书是原谷歌资深面试官的经验之作，帮助了许多想要加入脸书、苹果、谷歌等 IT 名企的求职者拿到 Dream offer。本专题的 100+ 编程面试题是在原书基础上精心挑选出来的，帮助你轻松应战 IT 名企技术面试。
 
-## [题解](https://github.com/doocs/leetcode/tree/master/lcci)
+## [题解](../lcci)
 
 ```
 .