Duplicate all elements in the array
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]
Make the vector [1 2 3 4 5 6 7 8 9 10]
Extract leading non-zero digit
Alphabetize by last name
Prime factor digits
Sum the elements in either diagonal of a square matrix
the average value of the elements
Convert characters into numbers
Converts numbers into characters
Calculate the average value of the elements in the array
calculate the length of matrix
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