### React – Interview Questions and Answers

January 19, 2021

Question: What is React? Answer: React is an open-source JavaScript library for building user interfaces. React can be used as a base in the development […]

### Javascript Interview Questions and Answers

January 15, 2021

Read More Here Front-end Interview Prep Guide. What is Closure in Javascript? Closure is a feature in javascript where inner function has access to outer […]

### DOM Tree Traversal through Breadth-first Search (BFS)

January 15, 2021

First We will learn about What is BFS? Breadth-first search (BFS) is an algorithm for traversing tree structures. The algorithm starts at the root node and […]

### DOM Tree Traversal through Depth-first Search (DFS)

January 13, 2021

First We will learn about What is DFS? Depth–first search (DFS) is an algorithm for traversing tree structures. The algorithm starts at the root node and […]

### Coding Challenge: Given an unsorted array A of size N of non-negative integers, find a continuous sub-array which adds to a given number S.

June 28, 2020

Input: [1, 2, 4, 6, 7, 5], 12 Output: [7,5] Logic Implementation: We can keep adding numbers from array. We can check conditions, if it […]

### Coding Challenge – Find the longest non-repeating substring from given string

March 30, 2020

To solve this problem we have to set the pointer at the starting index and keep adding characters until we find the repeating character. Once […]

### Coding Challenge – One Edit Boolean. Write a function to return if two words are exactly “one edit” away.

March 20, 2020

Write a function to return if two words are exactly “one edit” away. where an edit can be inserting one character anywhere in the word […]

### Coding Challenge – Three Sum Target. Find a triplet that sum to a given target value

March 19, 2020

Common Interview Coding question and answer. Coding challenge is very frequent in big tech companies interview such as Amazon, Facebook or Google. Take a look […]