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]
Project Euler: Problem 7, Nth prime
intersection of matrices
MATCH THE STRINGS (2 CHAR) very easy
Dots in a Circle
Sum the real and imaginary parts of a complex number
to the 2 all elements
Calculate the square root of a number
Convert characters into numbers
Calculate the average value of the elements in the array
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