Return three quarters of n without using addition, subtraction, multiplication or division.
Several answers seem to think "*" isn't actually multiplication :-( . Follow the rules, folks!
see problem 242 for an example of how to disallow the use of specific characters (improving your testsuite is a better way to ask players to "follow the rules" of your problem in Cody)
Seems people can't read the rules. Trouble is that Cody's "test cases" can't test for existence of disallowed operators in the code.
Given a 4x4 matrix, swap the two middle columns
Find a Pythagorean triple
Largest Prime Number
Matlab Basics - Switching Assignments
Min by mean
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