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Palindrome is known as a sequence, word, phrase, or number of characters which reads the same forwards and backward. But did you know you will find palindromes in Java? In this post, you will gain helpful insight into it.
You will also learn how to check the palindrome program in Java and gain a full understanding of the concept of the palindrome.
The palindrome in Java means it’s a phrase or a word, which is spelled out the same way, even backward [avoiding the capitalizations, punctuations, and spacing].
The palindrome program in Java is also known as a sequence or string of characters. This means it has the same type of sequence of letters when you read it in backward and forward directions.
To have a proper understanding of the palindrome in Java, here are some popular examples:
The palindrome number in Java is a number that stays when all its digits are reversed. Some of these numbers are 8888, 5555, 15451, etc. Here is another example:
“When you take 121 and then reverse it, you will find that after you reverse the number, it still stays the same.”
In this section, you will learn about the steps for the palindrome number program in Java. These are:
Under this section, you will understand how exactly a number is or not palindrome in Java in a detailed manner. Let’s begin!
class Main { public static void main(String[] args) { int num = 7777, reversedNum = 0, remainder; // store the number to the orginalNum int originalNum = num; // get the reverse of orginalNum //store it in the variable while (num ! = 0) { remainder = num % 10; reversedNum = reversedNum * 10 + remainder; num /= 10; class Main { //check if reversedNum and originalNum are the same if (originalNum == reversedNum) { System.out.println(originalNum + “is a Palindrom.”); } } } Here, the output is 7777.
The palindrome string in Java is a string that is known to stay the same when read in a backward or forward direction. To check the palindrome string, here is what you must do:
class Main { public static void main(String[] args) { String str = “Radar”, reverseStr = “ “; int strLength = str.length(); for (int i = (strLength – 1); i >=0; --1) { reverseStr = reverseStr + str.charAt(i); } If (str.toLowerCase().equals(reverseStr.toLowerCase())) { System.out.println(str + “is a Palindrome String.”); } else{ System.out.println(str + “is not a Palindrome String.”); } } } The Output: The radar is the palindrome string
When you have gained a proper understanding of the palindrome code in Java, knowing how to check the palindrome program is also easy for you.
There are several methods through which you can check the palindrome program in Java, and you will learn about them from this section:
Method 1: Checking the Palindrome Program with Loop
Method 2: Checking Palindrome Program with Recursion
Method 3: Check Palindrome Program with Apache Commons Lang Library
You can utilize any one of these methods to check the palindrome in Java, and all of these methods are pretty simple.
The experts of data-warehousing-and-data-mining have said that Palindrome contains a phrase or a sentence. For instance, Mr. Tanaka ate my orange”, Do Jane See God?”.
All spaces, capital letters, and punctuation are typically avoided. For instance, “dogs live on no evil star” and “steps on no dogs” contain spaces.
There are countless uses of palindrome in JavaScript, but the primary use of palindrome is that it can detect the sequence of letters, strings, and numbers.
All these things can be read from right to left and from left to right effectively to return or match the same characters of the same sequence.
There are many benefits of palindrome in Java, and some of these are:
When using the palindrome program, you might experience several challenges, which are:
The palindrome in Java has many examples, and some of these examples are:
This brings us to the end of this blog where we have learned how to find palindrome in Java. Palindrome is a combination of letters, numbers, texts, words, and phrases that has the same kind of meaning when you read it both backward and forward.
Once you have a good understanding of what exactly a palindrome is, it becomes easier for you to check the palindrome program in Java.
By following the right method, you will be able to find out whether a string or number in Java is a palindrome.
The time complexity is O(N) => N time, which is needed to check whether or not a string is a palindrome in Java.
In short, yes, it can. Numbers that are the equal reverse of the same number are known as palindrome numbers.
<span style="font-weight: 400;">To check whether or not a number is a palindrome in Java, you need to follow these steps:</span> <ul> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Get the number to check whether or not it's a palindrome</span></li> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Hold the number within a temporary variable</span></li> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">After that, reverse the number</span></li> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Compare the reversed number with the temporary one</span></li> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">When both numbers are the same, print “</span><i><span style="font-weight: 400;">palindrome number.”</span></i></li> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Otherwise, you can print “</span><i><span style="font-weight: 400;">not a palindrome number</span></i><span style="font-weight: 400;">.”</span></li> </ul>
String and recursion manipulation is utilized to determine whether or not a particular string is a palindrome while ignoring punctuation and spaces.
<span style="font-weight: 400;">Some of the use cases for checking the palindrome in Java are:</span> <ul> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Number Palindromes</span></li> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Multiple-word Palindromes</span></li> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Single-word Palindromes</span></li> <li style="font-weight: 400;" aria-level="1"><span style="font-weight: 400;">Palindromes with Capitalization, Punctuation, and Spaces</span></li> </ul>
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