feat: add 005

Author: Blankj

README.md

@@ -137,6 +137,7 @@
 
 [002]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/002/README.md
 [003]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/003/README.md
+[005]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/005/README.md
 [008]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/008/README.md
 [015]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/015/README.md
 [017]: https://github.com/Blankj/awesome-java-leetcode/blob/master/note/017/README.md