Merge pull request youngyangyang04#755 from kok-s0s/master

提供JavaScript版本代码

Author: youngyangyang04

problems/1049.最后一块石头的重量II.md

@@ -219,7 +219,28 @@ func max(a, b int) int {
 }
 ```
 
+JavaScript版本
+
+```javascript
+/**
+ * @param {number[]} stones
+ * @return {number}
+ */
+var lastStoneWeightII = function (stones) {
+    let sum = stones.reduce((s, n) => s + n);
+
+    let dpLen = Math.floor(sum / 2);
+    let dp = new Array(dpLen + 1).fill(0);
+
+    for (let i = 0; i < stones.length; ++i) {
+        for (let j = dpLen; j >= stones[i]; --j) {
+            dp[j] = Math.max(dp[j], dp[j - stones[i]] + stones[i]);
+        }
+    }
 
+    return sum - dp[dpLen] - dp[dpLen];
+};
+```
 
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 * 作者微信：[程序员Carl](https://mp.weixin.qq.com/s/b66DFkOp8OOxdZC_xLZxfw)