The solution to this problem doesn't make any sense!!!
If you are using the word "duplicate" to mean multiply by 2, then the correct answer is [2,4,6], not [1,4,6]
Extract leading non-zero digit
Distance walked 1D
Finding perimeter of a rectangle
Square a Number
Area of a circle
the average value of the elements
Calculate the average value of the elements in the array
Find the max element of the array
to the 2 all elements
calculate the length of matrix
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