如何使用递归在 Java 中反转字符串
在这个示例程序中，我们将反转用户输入的字符串。
我们将创建一个函数来反转字符串。后面我们会递归调用，直到所有字符都反转为止。
编写一个反转字符串的 Java 程序
package com.guru99;
public class ReverseString {
public static void main(String[] args) {
String myStr = "Guru99";
//create Method and pass and input parameter string
String reversed = reverseString(myStr);
System.out.println("The reversed string is: " + reversed);
}
//Method take string parameter and check string is empty or not
public static String reverseString(String myStr)
{
if (myStr.isEmpty()){
System.out.println("String in now Empty");
return myStr;
}
//Calling Function Recursively
System.out.println("String to be passed in Recursive Function: "+myStr.substring(1));
return reverseString(myStr.substring(1)) + myStr.charAt(0);
}
}
代码输出：
String to be passed in Recursive Function: uru99 String to be passed in Recursive Function: ru99 String to be passed in Recursive Function: u99 String to be passed in Recursive Function: 99 String to be passed in Recursive Function: 9 String to be passed in Recursive Function: String in now Empty The reversed string is: 99uruG
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