Starting Challenge

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This is a basic challenge to test out the interface and your if statement.


A 2-sum is the sum of a list of numbers, but every number that's next to a 2 is counted twice. Given a list of numbers, print out their 2-sum.

For example, when given 1 2 3 4 as input, print 14, the sum of the numbers with 1 and 3 counted twice.


As mentioned here, the challenges provide Standard Input and you need to print your solution to the output (with System.out.println) . You are provided with boilerplate code which processes the input and passes it to the method doStuff.

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