def lucky_seven(array)

    i = 0

    while i < array.length

        if array[i] + array[i + 1] + array[i + 2] == 7

            puts "True"

        else

            puts "False"

        end

        i += 1

    end

end

​

lucky_seven([2,1,5,1,0])

​

=begin

This function checks if any 3 consecutive elements within an array sum to the integer value of 7. The 3 elements need not be in sequential value.

​

For example: 

lucky_sevens?([2,1,5,1,0]) == true # => 1 + 5 + 1 == 7

lucky_sevens?([0,-2,1,8]) == true # => -2 + 1 + 8 == 7

lucky_sevens?([7,7,7,7]) == false

lucky_sevens?([3,4,3,4]) == false