LeetCode 1022 | Sum of Root To Leaf Binary Numbers
LeetCode 1022 – Sum of Root To Leaf Binary Numbers with this clean and interview-ready explanation.
In this video, we break down how to convert every root-to-leaf path in a binary tree into a binary number and efficiently calculate the total sum using DFS and bit manipulation.
Instead of building strings, we use this powerful trick:
This keeps the solution:
✅ O(n) time complexity
✅ O(h) space complexity
Clean and optimal for coding interviews
What You'll Learn: