Very important question asked in MNC related to String

In many MNC they ask how to reverse the content of String without using loop and methods of String class


Answer : We can reverse the content of String using the following algorithm  

Step#1: Create object of StringBuilder class

Step#2: Store string type data inside object of StringBuilder using append() method

Step#3: Reverse the content of StringBuilder using reverse() method

Step#4: Convert the content of StringBuilder into String using toString() method and store it inside a reference-variable of String

Now, we can show the entire process using a java program 

Note: Create Java project in Eclipse IDE and save this class inside ReverseTheString.java file

public class ReverseTheString
{
public static void main(String[] args)
{
// take a string
 String str = "I am a string";

// Step#1
 StringBuilder s = new StringBuilder();

// Step#2
 s.append(str);

// Step#3

s.reverse();

// Step#4

str = s.toString();

// show the data of string

System.out.println("String after reverse is -> "+str);

}
}

Output of code ===>>>

String after reverse is -> gnirts a ma I