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Given an array of integers representing the color of each sock, determine how many pairs of socks with matching colors there are. Free Download Most Popular 500+ Programs with Solutions in C, CPP, and Java. This video contains solution to HackerRank "Java Regex" problem. Home regex Find A Sub-Word solution | HackerRank | Regex Find A Sub-Word solution | HackerRank | Regex YASH PAL June 26, 2020. Home regex Utopian Identification Number solution | HackerRank | Regex Utopian Identification Number solution | HackerRank | Regex YASH PAL June 27, 2020. Time Conversion – HackerRank Solution in C, C++, Java, Python Given a time in 12 -hour AM/PM format , convert it to military (24-hour) time. Posted in java,codingchallenge,hackerrank-solutions *; import java.text. Alex works at a clothing store. Java Regex HackerRank Solution in Java Problem:-Write a class called MyRegex which will contain a string pattern. 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Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. return the modified sentence. Hackerrank Solutions Hackerrank is a site where you can test your programming skills and learn something new in many domains. Day 2 Operators Solution is the part of Hackerrank 30 days of code, in this problem. Post Posting Guidelines Formatting - Now. 317 efficient solutions to HackerRank problems. There is a large pile of socks that must be paired by color for sale. dexter@hotmail.com is a valid email address, so we print the name and email address pair received as input on a new line. Top Regular Expressions. Score: 15/15 In Java, this can be done using Pattern.matcher(). Here is a fine tutorial on how to use Python’s re module to work with regular expressions and also an online tool to test Regex patterns. HackerRank is the market-leading technical assessment and remote interview solution for hiring developers. 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Sock Merchant – HackerRank Solution in C, C++, Java, Python John works at a clothing store. When using this regular expression in Java, we have to "escape" the backslash characters with additional backslashes (as done in the code above). Given an array of integers representing the color of each sock, determine how many pairs of socks with matching colors there are.