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
Arrange Vector in descending order
letter yes yes & letter no no
Add a row of zeros on top of a matrix
Is this triangle right-angled?
Flip the vector from right to left
Find the average of a random sequance
Separate even from odd numbers in a vector - with a loop
Sum of Two Numbers
Triangle of numbers
How many Integers?
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