x = [1 2 4; 3 4 5; 5 6 7]
then y should be the sum of the diagonals of the matrix
y = 1 + 4 + 7 = 12
dooh ... the solution is in test suite
yeah, but it's a long one
Sum all integers from 1 to 2^n
Back to basics 5 - Clipboard
Number of 1s in a binary string
Is this triangle right-angled?
Replace May with April
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