Java Program To Check Palindrome Using While Loop with charAt() Function
- July 01, 2020
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Java Program To Check Palindrome Using While Loop with charAt() Function
In this Java Program, we check palindrome using for loop with charAt() function.
A word, phrase, number or sequence of words that reads same backward as forward are known as palindromes.
E.g. madam, civic, level, refer, 121 1331 etc.
Logic : while(i >= 0)
{
reverseString = reverseString + inputString.charAt(i);
i--;
}
Step 1 : Import java.util.Scanner
Step 2 : Create variable reverseString
Step 3 : Ask the user to enter the string
Step 4 : Create variable inputString and store the user entered input into it.
Step 5 : Create variable length and store the length of the user entered input string into it.
Step 6 : Create variable i and store the length-1 output in it.
Step 7 : Apply while loop
Step 8 : Apply if else and display the result.
Program :
import java.util.Scanner;
public class PalindromeWhile
{
public static void main(String[] args)
{
String reverseString="";
Scanner sc = new Scanner(System.in);
System.out.println("Enter the String:");
String inputString = sc.nextLine();
int length = inputString.length();
int i = length-1;
while(i >= 0)
{
reverseString = reverseString + inputString.charAt(i);
i--;
}
if(inputString.equals(reverseString))
System.out.println("Input String is a Palindrome");
else
System.out.println("Input String is not a Palindrome");
}
}
Output :
Enter any String : abccba
abccba
The input String is a Palindrome.
Enter any String : abc
abc
The input String is not a Palindrome.
For execution of the same do visit my YouTube Channel :
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