#牛客试题# 求给定二叉树的最小深度。最小深度是指树的根结点到最近叶子结点的最短路径上结点的数量。 Given a binary tree, find its minimum depth.The minimum ... https://www.nowcoder.com/questionTerminal/e08819cfdeb34985a8de9c4e6562e724