Palindrome Check : For ICSE Class 10 Students

For a combined post of all class 10 ICSE program click here : ICSE Class 10 Important Computer Programs

Checking for palindromes is a fundamental programming task that helps develop logical thinking and understanding of string manipulation. This guide will explain what a palindrome is, its significance, and how to write a Java program to check for palindromes.

What is a Palindrome?

A palindrome is a word, number, or sequence of characters that reads the same forward and backward, ignoring spaces, punctuation, and capitalization. Examples include:

• Words: “madam”, “racecar”
• Numbers: 121, 1221
• Phrases: “A man, a plan, a canal, Panama!”

Why is Palindrome Checking Important?

1. String Manipulation: Palindrome checking involves basic string operations like reversing a string, which is a common task in programming.
2. Logical Thinking: It helps students develop the logic to compare and manipulate strings.
3. Interview Questions: Palindrome problems are frequently asked in coding interviews to test problem-solving skills.

How to Check for a Palindrome

To check if a string is a palindrome, we need to:

1. Reverse the string.
2. Compare the reversed string with the original string.

Java Program to Check for a Palindrome

Below is a Java program to check if a given string is a palindrome.

Code Explanation:

1. Input String: We start with a string to be checked.
2. Reverse String: We reverse the input string.
3. Comparison: We compare the original string with the reversed string.

Sample Code:

public class Palindrome {
    public static void main(String[] args) {
        String str = "madam";
        String reversedStr = new StringBuilder(str).reverse().toString();
        if (str.equals(reversedStr)) {
            System.out.println(str + " is a palindrome.");
        } else {
            System.out.println(str + " is not a palindrome.");
        }
    }
}

Detailed Explanation:

1. Input: We initialize the string str with the value “madam”.
2. Reversing the String: We use StringBuilder to reverse the string.

• new StringBuilder(str).reverse().toString() creates a StringBuilder object with str, reverses it, and converts it back to a string.

1. Comparison: We use str.equals(reversedStr) to check if the original string is equal to the reversed string.

• If they are equal, it prints that the string is a palindrome.
• Otherwise, it prints that the string is not a palindrome.

Conclusion : Palindrome Check : For ICSE Class 10 Students.

Checking for palindromes is a great exercise for understanding string manipulation and logical comparisons in programming. Mastering this concept will help you tackle more complex string operations and improve your coding skills.

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