When the input is true, return 'on', otherwise, return 'off'.
The problem statement is misleading. 'if x' and 'if isequal(x, true)' are different conditions.
Which doors are open?
Replace NaNs with the number that appears to its left in the row.
Make one big string out of two smaller strings
Beginner's Problem - Squaring
Insert certain elements into a vector.
Number of problems
Create a random vector of integers with given sum
Bleed non-zeros to the right
Create a random logical vector of N elements of which M are true.
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