Calculate the mean of corner elements of a matrix.
e.g. a=[1 2 3;
4 5 6;
7 8 9;]
Mean = (1+3+7+9)/4 = 5
Alphabetize by last name
Number of 1s in the Binary Representation of a Number
Whether the input is vector?
Return the first and last character of a string
Is it an Armstrong number?
Find my birthday
Broken numlock key, oppps !
Sum of diagonals elements of a matrix
Back to basics - array operations
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