Hacker Rank Problem Weighted Uniform String Solution
A weighted string is a string of lowercase English letters where each letter has a weight in the inclusive range from to 26,…
Month: September 2017
Hacker Rank Problem Java HashSet | Advantage of HashSet
In computer science, a set is an abstract data type that can store certain values, without any particular order, and…
Hacker Rank Problem Java Find Max Sum of Hourglass in 2D Array Solution
You are given a 6 * 6 2D array. An hourglass in an array is a portion shaped like this: a…
Hacker Rank Solution Java 1D Array (Part 2)
Let’s play a game on an array! You’re standing at index 0 of an n-element array named game. From some index…
Hacker Rank Problem Java BigDecimal Sorting Solution
Java’s BigDecimal class can handle arbitrary-precision signed decimal numbers. Let’s test your knowledge of them! Given an array, s, of…
Hacker Rank Problem Tag Content Extractor Solution
In a tag-based language like XML or HTML, contents are enclosed between a start tag and an end tag like <tag>contents</tag>. Note that the corresponding end tag starts with a /.…
Hacker Rank Problem Valid Username Regular Expression Solution
A username is considered valid if all the following constraints are satisfied: The username consists of 8 to 30 characters inclusive, i.e.,…
HackerRank Problem Java Regex 2 – Duplicate Words Solution
In this challenge, we use regular expressions (RegEx) to remove instances of words that are repeated more than once, but…