CompletableFuture API
默认情况下CompletableFuture会使用公共的ForkJoinPool线程池,这个线程池默认创建的线程数是 CPU 的核数(也可以通过 JVM option:-Djava.util.concurrent.ForkJoinPool.common.parallelism 来设置ForkJoinPool线程池的线程数)。如果所有Completabl
1123 Lowest Common Ancestor of Deepest Leaves 最深叶节点的最近公共祖先
Description:
Given the root of a binary tree, return the lowest common ancestor of its deepest leaves.
Recall that:
The node of a binary tree