Return the number of days in a given month in 2017. If the input is not a valid month number, return -1.
Input: m = 1
Outpu: d = 31
Input: m = 2
Output: d = 28
Input: m = 13
Output: d = -1
You cannot use IF statements
Finding Perfect Squares
Insert zeros into vector
Square the input
Determine if input is divisible by three.
Horizontal matrix sort
Separate even from odd numbers in a vector - with a loop
Sum of adjacent elements in a vector
Vertical matrix sort
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