Concatenate N N Times

May 10, 2016

A number like 7777777 consists of the number 7 concatenated to itself 7 times. A number like 121212121212121212121212 consists of the number 12 concatenated to itself 12 times.

Your task is to write a program that calculates the number that is concatenated to itself the number of times as the number is (that’s hard to say). When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.

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