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hackerrank.com Arrays - DS Problem Link : https://www.hackerrank.com/challenges/arrays-ds/problem Difficulty : Easy Tip Very common problem :-) reversing array There few ways to solve Implementing reversing array by using reverse index -1 [a[(i+1)*-1] for i in range(len(a))] Simply call reversed(a) More simpler version is 'return a[::-1]' Solution #!/bin/python3 import math import os import rand..