Answers for "string reverse logic in java"

2

Reverse a string in java

// reverse a string using reverse() method of StringBuilder class
class ReverseUsingReverseMethod
{
   public static void main(String[] args)
   {
      String str = "Hello world Java";
      StringBuilder sb = new StringBuilder();
      // append string to StringBuilder
      sb.append(str);
      sb = sb.reverse();
      // printing reversed String
      System.out.println(sb);
   }
}
Posted by: Guest on December-07-2020
1

Reverse a string in java

// reverse a string using character array
class ReverseUsingCharacterArray
{
   public static void main(String[] args)
   {
      String str = "HelloWorldJava";
      char[] ch = str.toCharArray();
      for(int a = ch.length - 1; a >= 0; a--)
         System.out.print(ch[a]);
   }
}
Posted by: Guest on December-07-2020
1

Reverse a string in java

// reverse a string using ByteArray
class ReverseStringByteArray
{
   public static void main(String[] args)
   {
      String input = "HelloWorld";
      // getBytes() method to convert string into bytes[].
      byte[] strByteArray = input.getBytes();
      byte[] output = new byte[strByteArray.length];
      // store output in reverse order
      for(int a = 0; a < strByteArray.length; a++)
         output[a] = strByteArray[strByteArray.length - a - 1];
      System.out.println(new String(output));
   }
}
Posted by: Guest on December-07-2020
0

reverse a string in java

public class Main {

    public static void main(String[] args) {
	// Write a Java program to reverse a string.
        Scanner input = new Scanner(System.in);
        System.out.println("Enter the String:");
        char[] letters = input.nextLine().toCharArray();
        System.out.println(" Reverse String");
        for(int i = letters.length -1; i >= 0; i--){
            System.out.print(letters[i]);
        }
    }
}
Posted by: Guest on January-05-2021

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