Find Root of N-Ary Tree: coding question

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Given an unordered list of all nodes of an N-ary tree (nodes have children pointers but no parent pointers), identify the root — the single node that never appears as any node's child — in linear time (e.g., by set difference or XOR of values).

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Leetcode 1506. Find Root of N-Ary Tree
Reported May 19, 2026 · 1 source report
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Source snapshot: Nov 12, 2026
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Find Root of N-Ary Tree

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Find Root of N-Ary Tree

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