leetcode 100

#100 Same Tree

Question:

Given two binary trees, write a function to check if they are equal or not.

Two binary trees are considered equal if they are structurally identical and the nodes have the same value.

Answer:

判断数值是否相同，递归调用方法判断左子树与右子树。因为返回值为boolean，使用一条语句作递归即可。