Merge pull request #497 from jackeyjia/patch-17

add js solution for minDistance

problems/0072.编辑距离.md

@@ -307,6 +307,32 @@ func Min(args ...int) int {
 ```
 
 
+Javascript：
+```javascript
+const minDistance = (word1, word2) => {
+    let dp = Array.from(Array(word1.length + 1), () => Array(word2.length+1).fill(0));
+
+    for(let i = 1; i <= word1.length; i++) {
+        dp[i][0] = i; 
+    }
+
+    for(let j = 1; j <= word2.length; j++) {
+        dp[0][j] = j;
+    }
+
+    for(let i = 1; i <= word1.length; i++) {
+        for(let j = 1; j <= word2.length; j++) {
+            if(word1[i-1] === word2[j-1]) {
+                dp[i][j] = dp[i-1][j-1];
+            } else {
+                dp[i][j] = Math.min(dp[i-1][j] + 1, dp[i][j-1] + 1, dp[i-1][j-1] + 1);
+            }
+        }
+    }
+    
+    return dp[word1.length][word2.length];
+};
+```
 
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 * 作者微信：[程序员Carl](https://mp.weixin.qq.com/s/b66DFkOp8OOxdZC_xLZxfw)