For a given square matrix x and scalar a, find x^a without using '^' or 'mpower'.
Sort a list of complex numbers based on far they are from the origin.
Extract leading non-zero digit
Test if a Number is a Palindrome without using any String Operations
Flip the main diagonal of a matrix
Matrix which contains the values of an other matrix A at the given locations.
Get ranks of values in a vector
Count up then down
Apply a function array to an array of numbers
Replace multiples of 5 with NaN
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