LeetCode（1117）：H2O 生成 Building H2O（JUC）
2020.1.30 LeetCode 从零单刷个人笔记整理（持续更新）github：https://github.com/ChopinXBP/LeetCode-Babel传送门：H2O 生成There are two kinds of threads, oxygen and hydrogen. Your goal is to group these threads to form wate...
