Edit Distance
Detailed guide and Python implementation for the 'Edit Distance' problem.
Problem Statement
Given two strings word1 and word2, return the minimum number of operations required to convert word1 to word2.
You have the following three operations permitted on a word:
1. Insert a character
2. Delete a character
3. Replace a character
Write a function minDistance(word1: str, word2: str) -> int.
- •0 <= len(word1), len(word2) <= 500
- •word1 and word2 consist of lowercase English letters
Examples
word1 = "horse", word2 = "ros"
3
horse -> rorse (replace 'h' with 'r') -> rose (remove 'r') -> ros (remove 'e').
word1 = "intention", word2 = "execution"
5
intention -> extention -> exention -> exection -> execution. Total 5 operations.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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