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Sum of digit is Pallindrome or not Test | Pre-employment assessment - Testlify
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Sum of digit is Pallindrome or not Test

Overview of Sum of digit is Pallindrome or not Test

This question tests the attendee's ability to manipulate digits in a number and determine if it is a palindrome or not. the solution involves computing the digit sum of the given number, checking if it is a palindrome, and returning the result.

Skills measured

  • Mathematical, Data Structures & Algorithms

Available in



Coding Test


15 Mins





Use of Sum of digit is Pallindrome or not test

The problem requires us to determine if the digit sum of a given number is a palindrome or not. To do this, we first calculate the digit sum of the number, which is done by summing up all the digits in the number. We can obtain the individual digits by repeatedly dividing the number by 10 and taking the remainder until we reach zero.

Next, we check if the digit sum is a palindrome or not. To do this, we reverse the digit sum and compare it with the original digit sum. If they are the same, then the digit sum is a palindrome and we return "YES". Otherwise, we return "NO".

Relevant for

  • Android Developer
  • Java Developer
  • Software Developer

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Mathematical, Data Structures & Algorithms

The skill covered in "Sum of digit is Palindrome or not" involves writing a program to determine whether the sum of the digits of a given number forms a palindrome or not. This task requires a strong understanding of mathematical operations such as addition and modulo, as well as knowledge of data structures like arrays to store and manipulate the digits of the number. Algorithms play a crucial role in efficiently solving this problem, as they help in designing the logic to calculate the sum of digits and check for palindrome properties. This skill is important as it helps in honing problem-solving abilities and strengthening foundational knowledge in mathematics, data structures, and algorithms.

The Sum of digit is Pallindrome or not test is created by a subject-matter expert

Testlify’s skill tests are designed by experienced SMEs (subject matter experts). We evaluate these experts based on specific metrics such as expertise, capability, and their market reputation. Prior to being published, each skill test is peer-reviewed by other experts and then calibrated based on insights derived from a significant number of test-takers who are well-versed in that skill area. Our inherent feedback systems and built-in algorithms enable our SMEs to refine our tests continually.

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