feat: 72_edit_distance

72_edit_distance/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "edit_distance"
+version = "0.1.0"

72_edit_distance/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "edit_distance"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

72_edit_distance/src/lib.rs

@@ -0,0 +1,26 @@
+pub struct Solution;
+
+impl Solution {
+    pub fn min_distance(word1: String, word2: String) -> i32 {
+        let mut dp = vec![vec![0; word2.len() + 1]; word1.len() + 1];
+
+        let word1 = word1.bytes().collect::<Vec<u8>>();
+        let word2 = word2.bytes().collect::<Vec<u8>>();
+
+        for len1 in 0..word1.len() + 1 {
+            for len2 in 0..word2.len() + 1 {
+                dp[len1][len2] = if len1 == 0 || len2 == 0 {
+                    if len1 > 0 { len1 } else { len2 }
+                } else if word1[len1 - 1] == word2[len2 - 1] {
+                    dp[len1 - 1][len2 - 1]
+                } else {
+                    1 + dp[len1 - 1][len2]
+                        .min(dp[len1][len2 - 1])
+                        .min(dp[len1 - 1][len2 - 1])
+                };
+            }
+        }
+
+        dp[word1.len()][word2.len()] as i32
+    }
+}