Solving Edit Distance in Javascript. Please try yourself first to solve the problem and submit your implementation to LeetCode before looking into solution.

Problem Description

Given two words word1 and word2, find the minimum number of operations required to convert word1 to word2.

You have the following 3 operations permitted on a word:

Insert a character

Delete a character

Replace a character

Example 1:
Input: word1 = "horse", word2 = "ros"
Output: 3


  • horse -> rorse (replace 'h' with 'r')
  • rorse -> rose (remove 'r')
  • rose -> ros (remove 'e')
Example 2:
Input: word1 = "intention", word2 = "execution"
Output: 5


  • intention -> inention (remove 't')
  • inention -> enention (replace 'i' with 'e')
  • enention -> exention (replace 'n' with 'x')
  • exention -> exection (replace 'n' with 'c')
  • exection -> execution (insert 'u')

See the full details of the problem Edit Distance at LeetCode

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