Given an array of one's and zero's convert the equivalent binary value to an integer.
Eg: [0, 0, 0, 1] is treated as 0001 which is the binary representation of 1.
Examples:
Testing: [0, 0, 0, 1] ==> 1 Testing: [0, 0, 1, 0] ==> 2 Testing: [0, 1, 0, 1] ==> 5 Testing: [1, 0, 0, 1] ==> 9 Testing: [0, 0, 1, 0] ==> 2 Testing: [0, 1, 1, 0] ==> 6 Testing: [1, 1, 1, 1] ==> 15 Testing: [1, 0, 1, 1] ==> 11 However, the arrays can have varying lengths, not just limited to 4.
def binary_array_to_number(arr)
arr.join("").to_i(2)
end