|A DNA molecule is formed by two nucleotide chains of equal length. Each nucleotide in the first chain must form a bond with the nucleotide at the same position in the second chain. There are four types of nucleotides: A, C, G and T. Each type of nucleotide can only form a bond with one other type: A can only bond with T, and G can only bond with C. These pairs, AT and CG, are called complementary pairs. No other bonds are allowed.
You are given a String nucleotides, where each character is an available nucleotide. Return the length of the longest DNA molecule that can be created using only the available nucleotides. The length of a DNA molecule is the number of nucleotides in either one of its chains. If no DNA molecule can be created, return 0.
|-||For the purposes of this problem we assume that there is no restriction for the set of nucleotides in each DNA chain.|
|-||nucleotides will contain between 1 and 50 characters, inclusive.|
|-||Each character in nucleotides will be 'A','C','G' or 'T'.|