Exercise: Counting Population

Exercise on counting the population of a variable-sized, multi-dimensional array of objects.

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A demographist wants to find the total population within a demographic. This demographic is in a region with a temperature less than or equal to 10°C. However, with a limited programming background, the demographist has asked for your help!

Your task: is to find the sum of the population in a two-dimensional array of objects which reside in a region of temperature less than or equal to 10°C. Each object consists of the region information.

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