LeetCode 75 C++ | Step-by-Step Solutions (LAN Academy) - LeetCode 72: Edit Distance — DP Explained (Insert / Delete / Replace)

LeetCode 72. Edit Distance — compute the minimum number of operations to transform word1 → word2. Allowed operations: Insert Delete Replace In this video you’ll learn: The DP state definition and table interpretation The full recurrence (match vs 3 operations) Base cases + common pitfalls Time/space complexity DP Idea Let dp[i][j] be the minimum edits to convert word1[0..i-1] into word2[0..j-1]. Transitions: If word1[i-1] == word2[j-1]: dp[i][j] = dp[i-1][j-1] Else: dp[i][j] = 1 + min( dp[i-1][j] (delete), dp[i][j-1] (insert), dp[i-1][j-1] (replace) ) Complexity Time: O(m·n) Space: O(m·n) (can be optimized to O(n)) Leetcode playlist: https://www.youtube.com/playlist?list=PLF0G-7pZcOza_jyAxwMpa5KnK3vST5smK LAN Academy: youtube.com/channel/UCdKpV0t_sLv9gUsxHOYrt7g?sub_confirmation=1 #LeetCode #DynamicProgramming #CodingInterview #CPlusPlus#leetcodecoding #leetcodesolution #leetcodechallenge #faang #fang #computerscience #cs #codingtiktok #coding #codinglife #boostofhope #fyp #codinginterview #softwareengineer #swe #tech #foryou #python #learntocode #google #techtok #programming #algorithms #learntocode @reper #foryou #viral #reper #urmaritori #for