Exercises

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Given a string str and an int n, return a string made of the first n characters of the string, followed by the first n - 1 characters of...

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Write a function in C++ called 'factorial' that will take a positive integer as input and returns its factorial. In math, a factorial is...

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Write a function in Ruby called 'factorial()' that will take a positive integer as input and returns its factorial as output. backwards.

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This method takes an array of integers as its parameters and returns nothing. The method moves each element in the array to the right by...