This content originally appeared on Bits and Pieces - Medium and was authored by RAVI SHARMA
1. Find the frequency of elements in array
Method 1: Using Reduce method of array
Method 2: Using an Object
2. Group items on the basis of age of given array of object
3. Find the longest word in a sentence
4. Find the pairs of array element for which sum is equal to given target value (Two Sum Problem)
5. Find the missing number from unsorted array with O(n) complexity
Algorithm
- Create a variable sum = 1 which will store the missing number and a counter variable c = 2.
- Traverse the array from start to end.
- Update the value of sum as sum = sum — array[i] + c and update c as c++.
- Print the missing number as a sum.
6. Find the missing number from sorted array with O(n) complexity
7. Find the nth largest element in a sorted array
8. Remove duplicates from an array and return unique values
9. Print all duplicate elements of an array
10. Collect books from array of objects and return collection of books as an array
I hope you have found this quick list of common JavaScript interview questions and answers useful. Thank you for reading!
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10 Common JavaScript Interview Questions (and Answers) was originally published in Bits and Pieces on Medium, where people are continuing the conversation by highlighting and responding to this story.
This content originally appeared on Bits and Pieces - Medium and was authored by RAVI SHARMA
RAVI SHARMA | Sciencx (2022-04-06T08:52:14+00:00) 10 Common JavaScript Interview Questions (and Answers). Retrieved from https://www.scien.cx/2022/04/06/10-common-javascript-interview-questions-and-answers/
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