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Solution: Edit Distance

Understand how to solve the edit distance problem by applying dynamic programming. Learn to build and use a 2D table to compute the minimum insertions, deletions, and replacements needed to transform one string into another efficiently.

Statement

Given two strings word1 and word2, return the minimum number of operations needed to transform word1 into word2.

The following three operations are allowed on any character of a word:

  • Insert a character

  • Delete a character

  • Replace a character

Constraints:

  • 00 \leq word1.length, word2.length 500\leq 500 ...