Multiplying by Rotation

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Multiplication of natural numbers in general is a cumbersome operation. In some cases however the product can be obtained by moving the last digit to the front. Example: 179487 * 4 = 717948 Of course this property depends on the numbersystem you use, in the above example we used the decimal representation. In base 9 we have a shorter example: 17 * 4 = 71 (base 9) as (9 + 7) * 4 = 7 * 9 +1 Inpu

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solution.cppC++17

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