From f520b1dc172dafbc4361c48e3df22b8da399a2c3 Mon Sep 17 00:00:00 2001
From: Wang ChaoLan <68094392+Junior-W@users.noreply.github.com>
Date: Thu, 9 Nov 2023 17:20:12 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=20kama55.=E5=8F=B3=E6=97=8B?=
 =?UTF-8?q?=E5=AD=97=E7=AC=A6=E4=B8=B2.md=20Java=E7=89=88=E6=9C=AC?=
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---
 problems/kama55.右旋字符串.md | 62 ++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/problems/kama55.右旋字符串.md b/problems/kama55.右旋字符串.md
index afd29d73..f3841930 100644
--- a/problems/kama55.右旋字符串.md
+++ b/problems/kama55.右旋字符串.md
@@ -145,8 +145,70 @@ int main() {
 ## 其他语言版本
 
 ### Java：
+```Java
+// 版本一
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        Scanner in = new Scanner(System.in);
+        int n = Integer.parseInt(in.nextLine());
+        String s = in.nextLine();
+
+        int len = s.length();  //获取字符串长度
+        char[] chars = s.toCharArray();
+        reverseString(chars, 0, len - 1);  //反转整个字符串
+        reverseString(chars, 0, n - 1);  //反转前一段字符串，此时的字符串首尾尾是0,n - 1
+        reverseString(chars, n, len - 1);  //反转后一段字符串，此时的字符串首尾尾是n,len - 1
+        
+        System.out.println(chars);
+
+    }
+
+    public static void reverseString(char[] ch, int start, int end) {
+        //异或法反转字符串，参照题目 344.反转字符串的解释
+        while (start < end) {
+            ch[start] ^= ch[end];
+            ch[end] ^= ch[start];
+            ch[start] ^= ch[end];
+            start++;
+            end--;
+        }
+    }
+}
 
 
+// 版本二
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        Scanner in = new Scanner(System.in);
+        int n = Integer.parseInt(in.nextLine());
+        String s = in.nextLine();
+
+        int len = s.length();  //获取字符串长度
+        char[] chars = s.toCharArray();
+        reverseString(chars, 0, len - n - 1);  //反转前一段字符串，此时的字符串首尾是0,len - n - 1
+        reverseString(chars, len - n, len - 1);  //反转后一段字符串，此时的字符串首尾是len - n,len - 1
+        reverseString(chars, 0, len - 1);  //反转整个字符串
+
+        System.out.println(chars);
+
+    }
+
+    public static void reverseString(char[] ch, int start, int end) {
+        //异或法反转字符串，参照题目 344.反转字符串的解释
+        while (start < end) {
+            ch[start] ^= ch[end];
+            ch[end] ^= ch[start];
+            ch[start] ^= ch[end];
+            start++;
+            end--;
+        }
+    }
+}
+```
 
 ### Python: