Write a method counts$($String$[]$ sequences$)$ that takes a String$[]$ as a parameter where each String represents a sequence of nucleotides obtained from reading the same DNA strand. Each character in a String corresponds to a nucleotide: Adenine $(\text{'}$A$\text{'}),$ Cytosine $(\text{'}$C$\text{'}),$ Guanine $(\text{'}$G$\text{'}),$ or Thymine $(\text{'}$T$\text{'}).$ You may assume that all DNA sequences in the array are of the same length.

This method's goal is to calculate the frequency of each nucleotide at every position across the provided DNA sequences. The result and return value is a $2$D integer array $($int$[][]),$ where:

Each row corresponds to a position in the DNA sequence.

Each column corresponds to one of the nucleotides $(\text{'}$A$\text{'},\text{'}$C$\text{'},\text{'}$G$\text{'},\text{'}$T$\text{'}).$

The value at each cell represents the count of a specific nucleotide at that position across all sequences.