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problem.ts — LeetCode #297Hard
// Serialize and Deserialize Binary Tree
// Attempt #3 · 2h 18m elapsed · 0/64 tests passing
 
class Codec {
// ??? How do I handle null nodes???
// BFS or DFS... I can't figure it out
serialize(root: TreeNode | null): string {
return ""; // ← stuck here 😭
}
}
J
James K. (Google L6) joined
44 min session · Problem solved
✓ Solved
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