Question: Print Hello World as ‘Olleh Dlrow’ using Java.
Problem
Write a program to reverse a String or we can say that reverses each word in a sentence and also while printing the first letter should be in upper case. Input can contain any number of words as mentioned below:
Input String:-
Hello World
ask for help
You Live Only Once
The output would be as:-
Olleh Dlrow
Ksa Rof Pleh
Uoy Evil Ylno Ecno
Code to Reverse a String
public class ReverseWord
{
public static void main(String[] args)
{
// Step #1: Taking multiple Strings in array.
String[] strArray={"Hello World","ask for help","You Live Only Once"};
for (String string : strArray)
{
reverseString(string);
}
}
public static void reverseString(String string)
{
// Step #2: Extracting words from a sentence.
String[] getWords=string.split(" ");
for (String word : getWords)
{
// Step #3 : Getting reverse of each word.
String revString=new StringBuffer(word).reverse().toString();
// Step #4: Creating first letter in Upper case and rest in Lower case for each word.
revString=revString.substring(0, 1).toUpperCase()+revString.substring(1).toLowerCase();
// Step #5: Printing the expected Output
System.out.print(revString+" ");
}
System.out.println();
}
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