Find the mode of the vector
Assumption: no vector is bimodal
Example 1: input=[1 2 3 4 4]; output=4
Example 2: input=[7 1 2 7]; output=7
I never know that a funtion call "mode" actually do exist!:lol
Find the palindrome
Project Euler: Problem 5, Smallest multiple
Sum the elements in either diagonal of a square matrix
multiply by three
Duplicate a character
Sort complex numbers into complex conjugate pairs
Change the sign of even index entries of the reversed vector
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