Java 中的 StringBuilder reverse()示例
原文:https://www . geeksforgeeks . org/stringbuilder-reverse-in-Java-with-examples/
StringBuilder 的反转()方法用于反转 StringBuilder 中的字符。该方法有助于将该字符序列替换为相反的序列。
语法:
public java.lang.AbstractStringBuilder reverse()
返回: 该方法在反转字符后返回 StringBuilder 对象。
下面的程序说明了 Java . lang . stringbuilder . replace()方法: 示例 1:
// Java program to demonstrate
// the reverse() Method.
class GFG {
public static void main(String[] args)
{
// create a StringBuilder object
// with a String pass as parameter
StringBuilder str
= new StringBuilder("WelcomeGeeks");
// print string
System.out.println("String = "
+ str.toString());
// reverse the string
StringBuilder reverseStr = str.reverse();
// print string
System.out.println("Reverse String = "
+ reverseStr.toString());
}
}
输出:
String = WelcomeGeeks
Reverse String = skeeGemocleW
例 2:
// Java program to demonstrate
// the reverse() Method.
class GFG {
public static void main(String[] args)
{
// create a StringBuilder object
// with a String pass as parameter
StringBuilder str
= new StringBuilder("AAAABBBCCCC");
// print string
System.out.println("String = "
+ str.toString());
// reverse the string
StringBuilder reverseStr = str.reverse();
// print string
System.out.println("Reverse String = "
+ reverseStr.toString());
}
}
输出:
String = AAAABBBCCCC
Reverse String = CCCCBBBAAAA
参考文献: https://docs . Oracle . com/javase/10/docs/API/Java/lang/stringbuilder . html # reverse()
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