🧠 Before you code — what pattern fits?
The leaf value sequence of a binary tree is the values of its leaves read from left to right. Two trees are leaf-similar if their leaf value sequences are the same. Given the roots of two trees, return true if they are leaf-similar.
[3,5,1,6,2,9,8,null,null,7,4] vs [3,5,1,6,7,4,2,null,null,null,null,null,null,9,8] → true
🎬 Video explanation · NeetCodeIO
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