Maximum Genetic Difference Query — LeetCode 1938 Python Solution
HardBit ManipulationDepth-First SearchTrieArrayHash Table
- Problem
- #1938
- Pattern
- Trie
- Reading time
- 2 min
- Source
- leetcode.com
The problem
There is a rooted tree consisting of n nodes numbered 0 to n - 1. Each node's number denotes its unique genetic value (i.e.
Example
- Input
- parents = [-1,0,1,1], queries = [[0,2],[3,2],[2,5]]
- Output
- [2,3,7]
- Explanation
- The queries are processed as follows:
Complexity
| Measure | Complexity |
|---|---|
| Time | O(n) |
| Space | O(n) auxiliary |
Pattern: Trie
Store a set of words by their shared prefixes so lookups cost the length of the word. LeetCode 1938. Maximum Genetic Difference Query is filed here because LeetCode tags it Trie, which is the vocabulary this hub collects.
The trie guide has the Python template for the pattern and the 49 LeetCode problems that use it.
Related problems
Frequently asked questions
- How hard is LeetCode 1938. Maximum Genetic Difference Query?
- LeetCode 1938. Maximum Genetic Difference Query is rated Hard on LeetCode.
- What is the time complexity of LeetCode 1938. Maximum Genetic Difference Query?
- The Python solution on this page runs in O(n).
- What is the space complexity of LeetCode 1938. Maximum Genetic Difference Query?
- The Python solution on this page uses O(n) auxiliary space.
- What topics does LeetCode 1938. Maximum Genetic Difference Query cover?
- LeetCode 1938. Maximum Genetic Difference Query is tagged Bit Manipulation, Depth-First Search, Trie, Array and Hash Table on LeetCode.