From 20aa3a2454e955e17f37ecd2e22a56451e44fab4 Mon Sep 17 00:00:00 2001
From: gpfpter <67033145+gpfpter@users.noreply.github.com>
Date: Fri, 21 May 2021 16:27:55 +0800
Subject: [PATCH] =?UTF-8?q?=E5=89=91=E6=8C=87=20Offer=2058=20-=20II.=20?=
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剑指 Offer 58 - II. 左旋转字符串 Java代码提交，与作者思路相同的三次反转。
---
 .../剑指Offer58-II.左旋转字符串.md    | 23 ++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/problems/剑指Offer58-II.左旋转字符串.md b/problems/剑指Offer58-II.左旋转字符串.md
index 3e9ab11f..9bd639aa 100644
--- a/problems/剑指Offer58-II.左旋转字符串.md
+++ b/problems/剑指Offer58-II.左旋转字符串.md
@@ -96,10 +96,27 @@ public:
 
 ## 其他语言版本
 
-
 Java：
-
-
+```java
+class Solution {
+    public String reverseLeftWords(String s, int n) {
+        int len=s.length();
+        StringBuilder sb=new StringBuilder(s);
+        reverseString(sb,0,n-1);
+        reverseString(sb,n,len-1);
+        return sb.reverse().toString();
+    }
+     public void reverseString(StringBuilder sb, int start, int end) {
+        while (start < end) {
+            char temp = sb.charAt(start);
+            sb.setCharAt(start, sb.charAt(end));
+            sb.setCharAt(end, temp);
+            start++;
+            end--;
+            }
+        }
+}
+```
 Python：