1457. Pseudo-Palindromic Paths in a Binary Tree

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Given a binary tree where node values are digits from 1 to 9. A path in the binary tree is said to be pseudo-palindromic if at least one permutation of the node values in the path is a palindrome. Return the number of pseudo-palindromic paths going from the root node to leaf nodes. Example 1: Input: root = [2,3,1,3,1,null,1] Output: 2 Explanation: The figure above represents the given binary

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solution.cppC++17

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