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[LeetCode - Daily Challenge] 331. Verify Preorder Serialization of a Binary Tree

Problem One way to serialize a binary tree is to use preorder traversal. When we encounter a non-null node, we record the node's value. If it is a null node, we record using a sentinel value such as '#'. For example, the above binary tree can be serialized to the string "9,3,4,#,#,1,#,#,2,#,6,#,#", where '#' represents a null node. Given a string of comma-separated values pre..
Algorithm/LeetCode Daily Challenge 2021. 8. 27. 10:30
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