Calculate the average value of the elements in the array
Remove any row in which a NaN appears
Project Euler: Problem 1, Multiples of 3 and 5
Height of a right-angled triangle
Given the variable x as your input, multiply it by four, then divide it by two. Then put the result in y.
Calculate the square root of a number
Convert characters into numbers
Duplicate all elements in the array
Find the max element of the array
calculate the length of matrix
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