Leetcode Problem 1457. Pseudo-Palindromic Paths in a Binary Tree

1457. Pseudo-Palindromic Paths in a Binary Tree

Leetcode Solutions

Start with the root node and an initial path count of 0.
Use a helper function that takes the current node and a bit mask representing the frequency count of digits.
If the current node is null, return.
Update the bit mask by toggling the bit corresponding to the current node's value.
If the current node is a leaf, check if the bit mask represents a pseudo-palindromic path by ensuring at most one bit is set.
Recursively call the helper function for the left and right children.
After the traversal, return the total count of pseudo-palindromic paths.

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