From dc8f9fbde59e6e891e047d1721ba8ecf1c3a6ff7 Mon Sep 17 00:00:00 2001
From: SwordsmanYao <swordsman.yao@foxmail.com>
Date: Fri, 23 Jul 2021 17:09:43 +0800
Subject: [PATCH] =?UTF-8?q?[0151.=E7=BF=BB=E8=BD=AC=E5=AD=97=E7=AC=A6?=
 =?UTF-8?q?=E4=B8=B2=E9=87=8C=E7=9A=84=E5=8D=95=E8=AF=8D]=20=E5=A2=9E?=
 =?UTF-8?q?=E5=8A=A0=20javaScript=20=E7=89=88=E6=9C=AC=E4=BB=A3=E7=A0=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/0151.翻转字符串里的单词.md | 59 ++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/problems/0151.翻转字符串里的单词.md b/problems/0151.翻转字符串里的单词.md
index ffa3446a..95222d2e 100644
--- a/problems/0151.翻转字符串里的单词.md
+++ b/problems/0151.翻转字符串里的单词.md
@@ -407,6 +407,65 @@ func reverse(b *[]byte, left, right int) {
 
 
 
+javaScript:
+```js
+/**
+ * @param {string} s
+ * @return {string}
+ */
+ var reverseWords = function(s) {
+   // 字符串转数组
+   const strArr = Array.from(s);
+   // 移除多余空格
+   removeExtraSpaces(strArr);
+   // 翻转
+   reverse(strArr, 0, strArr.length - 1);
+
+   let start = 0;
+
+   for(let i = 0; i <= strArr.length; i++) {
+     if (strArr[i] === ' ' || i === strArr.length) {
+       // 翻转单词
+       reverse(strArr, start, i - 1);
+       start = i + 1;
+     }
+   }
+
+   return strArr.join('');
+};
+
+// 删除多余空格
+function removeExtraSpaces(strArr) {
+  let slowIndex = 0;
+  let fastIndex = 0;
+
+  while(fastIndex < strArr.length) {
+    // 移除开始位置和重复的空格
+    if (strArr[fastIndex] === ' ' && (fastIndex === 0 || strArr[fastIndex - 1] === ' ')) {
+      fastIndex++;
+    } else {
+      strArr[slowIndex++] = strArr[fastIndex++];
+    }
+  }
+
+  // 移除末尾空格
+  strArr.length = strArr[slowIndex - 1] === ' ' ? slowIndex - 1 : slowIndex;
+}
+
+// 翻转从 start 到 end 的字符
+function reverse(strArr, start, end) {
+  let left = start;
+  let right = end;
+
+  while(left < right) {
+    // 交换
+    [strArr[left], strArr[right]] = [strArr[right], strArr[left]];
+    left++;
+    right--;
+  }
+}
+```
+