Laserwords Interview Questions and Answers

You have been given a string 'S' which only consists of lowercase English-Alphabet letters.

Your task is to find the shortest(minimum length) substring of 'S' which contain...read more

You are given a string 'STR'. The string contains [a-z] [A-Z] [0-9] [special characters]. You have to find the reverse of the string.

For example:

 If the given string is: STR = "abcde". You h...read more

You are given an array/list 'ARR' storing values of 'N' nodes of a binary tree.

Your task is to construct a complete binary tree from the given array in level order fashion, i.e. e...read more

Given two strings ‘STR’ and ‘PTR’. Find all the starting indices of ‘PTR’ anagram substring in ‘STR’. Two strings are anagram if and only if one string can be converted into another stri...read more

You are given two strings which are expressions in variables. You need to compare and tell if they are similar or different. You need to return “YES” for the same ...read more

What is the event loop and event queue?

Swapping 2 numbers without any 3rd variable.