摘要：
There is a ball in a maze with empty spaces (represented as 0) and walls (represented as 1). The ball can go through the empty spaces by rolling up, d 阅读全文
摘要：
You have a graph of n nodes. You are given an integer n and an array edges where edges[i] = [ai, bi] indicates that there is an edge between ai and bi 阅读全文
摘要：
1、不用spring boot的选择 name, age, dept list 2、lambda排序List.sort(employee, (a, b) -> ((a.name.compareTo(b.name)) && (a.age.compareTo(b.age)))); class Examp 阅读全文