For root [1,null,2,3], what is the inorder output?

Question

For root [1,null,2,3], what is the inorder output?

Option A — Correct answer

[1,3,2]

Option B

[1,2,3]

Option C

[2,3,1]

Option D

[]

Explanation

The inorder output is [1,3,2].

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