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In: Computer Science

USING JAVA: complete the method below in the BasicBioinformatics class. /** * Class BasicBioinformatics contains static...

USING JAVA: complete the method below in the BasicBioinformatics class.

/**

* Class BasicBioinformatics contains static methods for performing common DNA-based operations in

* bioinformatics.

*

*/

public class BasicBioinformatics {

/**

* Calculates and returns the number of times each type of nucleotide occurs in a DNA sequence.

*

* @param dna a char array representing a DNA sequence of arbitrary length, containing only the

* characters A, C, G and T

*

* @return an int array of length 4, where subscripts 0, 1, 2 and 3 contain the number of 'A',

* 'C', 'G' and 'T' characters (respectively) in the given sequence

*/

public static int[] nucleotideCounts(char[] dna) {

// INPUT CODE HERE

}

/**

* Calculates and returns the number of times each type of nucleotide occurs in a DNA sequence.

*

* @param dna a String representing a DNA sequence of arbitrary length, containing only the

* characters A, C, G and T

*

* @return an int array of length 4, where subscripts 0, 1, 2 and 3 contain the number of 'A',

* 'C', 'G' and 'T' characters (respectively) in the given sequence

*/

public static int[] nucleotideCounts(String dna) {

return nucleotideCounts(dna.toCharArray());

}

Expert Solution

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/**
 * Class BasicBioinformatics contains static methods for performing common
 * DNA-based operations in bioinformatics.
 * 
 * 
 */
public class BasicBioinformatics {

        /**
         * Calculates and returns the number of times each type of nucleotide occurs
         * in a DNA sequence.
         * 
         * @param dna
         *            a char array representing a DNA sequence of arbitrary length,
         *            containing only the characters A, C, G and T
         * 
         * @return an int array of length 4, where subscripts 0, 1, 2 and 3 contain
         *         the number of 'A', 'C', 'G' and 'T' characters (respectively) in
         *         the given sequence
         */
        public static int[] nucleotideCounts(char[] dna) {
                // creating an int array of size 4, values will be 0 by default.
                int result[] = new int[4];
                // looping through dna array
                for (int i = 0; i < dna.length; i++) {
                        // if current char is A, incrementing array element at index 0
                        if (dna[i] == 'A') {
                                result[0]++;
                        }
                        // if current char is C, incrementing array element at index 1
                        else if (dna[i] == 'C') {
                                result[1]++;
                        }
                        // if current char is G, incrementing array element at index 2
                        else if (dna[i] == 'G') {
                                result[2]++;
                        }
                        // now only T is remaining, if the input is valid, then we don't
                        // need to check for T, simply increment element at index 3
                        else {
                                result[3]++;
                        }
                }
                return result;
        }

        /**
         * Calculates and returns the number of times each type of nucleotide occurs
         * in a DNA sequence.
         * 
         * @param dna
         *            a String representing a DNA sequence of arbitrary length,
         *            containing only the characters A, C, G and T
         * 
         * @return an int array of length 4, where subscripts 0, 1, 2 and 3 contain
         *         the number of 'A', 'C', 'G' and 'T' characters (respectively) in
         *         the given sequence
         */
        public static int[] nucleotideCounts(String dna) {
                return nucleotideCounts(dna.toCharArray());
        }
}

venereology answered 6 months ago

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