Leetcode Problem 1104. Path In Zigzag Labelled Binary Tree

1104. Path In Zigzag Labelled Binary Tree

Leetcode Solutions

Mathematical Approach to Find Path in Zigzag Labelled Binary Tree

  1. Initialize an empty list path to store the path from the root to the given label.
  2. Calculate the level of the given label using the formula level = floor(log2(label)).
  3. Add the given label to the path list.
  4. Loop from the current level down to 1: a. Calculate the start and end of the current level using start = 2^level and end = 2^(level+1) - 1. b. Find the mirror of the label in the current level using mirror = start + end - label. c. Find the parent of the mirror by dividing it by 2 and add it to the path list. d. Update the label to be the parent for the next iteration.
  5. Reverse the path list to get the path from the root to the given label.
  6. Return the path list.
UML Thumbnail

Recursive Approach to Find Path in Zigzag Labelled Binary Tree

Ask Question

Programming Language
image/screenshot of info(optional)
Full Screen
Loading...

Suggested Answer

Answer
Full Screen
Copy Answer Code
Loading...