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]
Sum all integers from 1 to 2^n
pressure to dB?
Project Euler: Problem 4, Palindromic numbers
Rotate input square matrix 90 degrees CCW without rot90
Vectors counting by 2
Calculate the average value of the elements in the array
calculate the length of matrix
Find the max element of the array
Converts numbers into characters
the average value of the elements
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