Algorithm with Big O | Dataford Interview Questions

Can you write a function to solve a classic algorithmic problem and explain its Big O complexity? Implement edit_distance(word1, word2) to return the minimum number of single-character insertions, deletions, or substitutions required to transform word1 into word2. Inputs are strings and the output is an integer. For example, edit_distance("horse", "ros") returns 3, while edit_distance("", "abc") returns 3; explain the time and space complexity.

Constraints

0 <= len(word1), len(word2) <= 500
word1 and word2 contain lowercase English letters
Each operation inserts, deletes, or substitutes exactly one character
Return the minimum number of operations

Function Signature

def edit_distance(word1, word2):

Your question is Algorithm with Big O. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Constraints

0 <= len(word1), len(word2) <= 500
word1 and word2 contain lowercase English letters
Each operation inserts, deletes, or substitutes exactly one character
Return the minimum number of operations

Function Signature

def edit_distance(word1, word2):

Your question is Algorithm with Big O. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.