Sum all integers from 1 to 2^n
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Basic arrays operations.
Length of the hypotenuse
Nth root of a number
Product of all elements in an array
Raise each element to the power of its index in a matrix
Basics: counting digits of a number irrespective of the sign
Capitalized string operations
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