feat: add question 151

Author: yinxin630

151.data

@@ -0,0 +1,3 @@
+"the sky is blue"
+"  hello world!  "
+"a good   example"

151.翻转字符串里的单词.js

@@ -0,0 +1,21 @@
+/*
+ * @lc app=leetcode.cn id=151 lang=javascript
+ *
+ * [151] 翻转字符串里的单词
+ * 
+ * 1. 正则匹配分词
+ * 2. 去掉空单词
+ * 3. 顺序翻转
+ * 4. 拼接单词
+ */
+
+// @lc code=start
+/**
+ * @param {string} s
+ * @return {string}
+ */
+var reverseWords = function(s) {
+    return s.split(/[ ]+/).filter(word => word).reverse().join(' ');
+};
+// @lc code=end
+