This content originally appeared on DEV Community and was authored by DPC
Daily JavaScript Challenge: Find Missing Numbers in Sequence
Hey fellow developers! 
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 numbers between 1 and n inclusive, some numbers appear twice, and others are missing. Your task is to find the numbers that are missing from the sequence.
Ready to Begin?
- Fork this challenge
- Write your solution
- Test it against the provided test cases
- Share your approach in the comments below!
Want to Learn More?
Check out the documentation about this topic here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
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