Daily JavaScript Challenge #JS-253: Find Missing Number in Array

Daily JavaScript Challenge: Find Missing Number in Array

Hey fellow developers! đź‘‹ Welcome to today’s JavaScript coding challenge. Let’s keep those programming skills sharp!

The Challenge

Difficulty: Medium
Topic: Array Manipulat…


This content originally appeared on DEV Community and was authored by DPC

Daily JavaScript Challenge: Find Missing Number in Array

Hey fellow developers! đź‘‹ Welcome to today's JavaScript coding challenge. Let's keep those programming skills sharp!

The Challenge

Difficulty: Medium

Topic: Array Manipulation

Description

Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array.

Ready to Begin?

https://www.dpcdev.com/

  1. Fork this challenge
  2. Write your solution
  3. Test it against the provided test cases
  4. Share your approach in the comments below!

Want to Learn More?

Check out the documentation about this topic here: https://en.wikipedia.org/wiki/Summation

Join the Discussion!

  • How did you approach this problem?
  • Did you find any interesting edge cases?
  • What was your biggest learning from this challenge?

Let's learn together! Drop your thoughts and questions in the comments below. 👇

This is part of our Daily JavaScript Challenge series. Follow me for daily programming challenges and let's grow together! 🚀

javascript #programming #coding #dailycodingchallenge #webdev


This content originally appeared on DEV Community and was authored by DPC


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APA

DPC | Sciencx (2025-08-16T00:01:00+00:00) Daily JavaScript Challenge #JS-253: Find Missing Number in Array. Retrieved from https://www.scien.cx/2025/08/16/daily-javascript-challenge-js-253-find-missing-number-in-array/

MLA
" » Daily JavaScript Challenge #JS-253: Find Missing Number in Array." DPC | Sciencx - Saturday August 16, 2025, https://www.scien.cx/2025/08/16/daily-javascript-challenge-js-253-find-missing-number-in-array/
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VANCOUVER
DPC | Sciencx - » Daily JavaScript Challenge #JS-253: Find Missing Number in Array. [Internet]. [Accessed ]. Available from: https://www.scien.cx/2025/08/16/daily-javascript-challenge-js-253-find-missing-number-in-array/
CHICAGO
" » Daily JavaScript Challenge #JS-253: Find Missing Number in Array." DPC | Sciencx - Accessed . https://www.scien.cx/2025/08/16/daily-javascript-challenge-js-253-find-missing-number-in-array/
IEEE
" » Daily JavaScript Challenge #JS-253: Find Missing Number in Array." DPC | Sciencx [Online]. Available: https://www.scien.cx/2025/08/16/daily-javascript-challenge-js-253-find-missing-number-in-array/. [Accessed: ]
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» Daily JavaScript Challenge #JS-253: Find Missing Number in Array | DPC | Sciencx | https://www.scien.cx/2025/08/16/daily-javascript-challenge-js-253-find-missing-number-in-array/ |

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