Max1020

Given 2 positive int values, return the larger value that is in the range 10..20 inclusive, or return 0 if neither is in that range.

[!scala]

Note that Math.max(Int,Int):Int and Math.min(Int,Int):Int return the maximum and minimum of two integers

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This exercise was converted to PLM from the excellent exercising site http://codingbat.com/