Learning Souces

1.JAVA

https://github.com/doocs/advanced-java

https://r2coding.com/#/?id=编程语言

https://doocs.github.io/advanced-java/#/?id=互联网-java-工程师进阶知识完全扫盲

https://exercism.org/tracks/java

https://github.com/crisxuan/bestJavaer

2.Leetcode

https://doocs.github.io/leetcode/#/?id=_5-高级数据结构(https://github.com/doocs/leetcode)

https://www.techinterviewhandbook.org/grind75?weeks=12&hours=28

https://github.com/youngyangyang04/leetcode-master

https://programmercarl.com/数组理论基础.html#数组理论基础