Java BigDecimal – Hacker Rank Solution

Objective Java’s BigDecimal class can handle arbitrary-precision signed decimal numbers. Let’s test your knowledge of them! Given an array, ...

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Valid Username Regular Expression – Hacker Rank Solution

Objective You are updating the username policy on your company’s internal networking platform. According to the policy, a username is consid...

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Java Regex 2 – Hacker Rank Solution

Problem : In this challenge, we use regular expressions (RegEx) to remove instances of words that are repeated more than once, but retain th...

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Java Regex – Hacker Rank Solution

Problem : Write a class called  MyRegex  which will contain a string pattern. You need to write a regular expression and assign it to the pa...

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Java String Tokens – Hacker Rank Solution

Problem : Given a string,8 , matching the regular expression  [A-Za-z !,?._'@]+ , split the string into  tokens . We define a token to b...

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Java Anagrams – Hacker Rank Solution

Problem : Two strings, a and b, are called anagrams if they contain all the same characters in the same frequencies. For this challenge, the...

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