5.1.9 Symmetric Tree这个题目描述是不是错了

[aCayF]

原题描述是
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).

For example, this binary tree is symmetric:
1
/
2 2
/ \ /
3 4 4 3

But the following is not:
1
/
2 2
\
3 3

[soulmachine]

感谢纠正，这题描述的确错了，是复制粘贴的上一题。