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A Range Module is a module that tracks ranges of numbers. Your task is to design and implement the following interfaces in an efficient manner.addRange(int left, int right)Adds the half-open int...

Implement a data structure supporting the following operations:Inc(Key) - Inserts a new keywith value 1. Or increments an existing key by 1. Key is guaranteed to be anon-emptystring. Dec(Key)...

Given a chemicalformula(given as a string), return the count of each atom.An atomic element always starts with an uppercase character, then zero or more lowercase letters, representing the name....