JavaNecleotide.java

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Arrays;
import java.util.List;


//java.lang.AssertionError: expecting:
//        <{'A'=0, 'C'=0, 'G'=0, 'T'=0}>
//        to contain:
//        <[MapEntry[key=A, value=0], MapEntry[key=C, value=0], MapEntry[key=G, value=0], MapEntry[key=T, value=0]]>
//        but could not find:
//        <[MapEntry[key=A, value=0], MapEntry[key=C, value=0], MapEntry[key=G, value=0], MapEntry[key=T, value=0]]>

public class DNA {

    public String strand = "Nothing";

    DNA(String strand) {
        if (checkValidStand(strand)) {
            this.strand = strand;
        }
    }

    public static void main(String[] args) {
        DNA newDNA = new DNA("");
       // System.out.println(newDNA.strand);
        System.out.println(newDNA.nucleotideCounts());
    }


    private Boolean checkValidStand(String inString) {
        return Boolean.TRUE;
        // TODO: 9/25/15
        // Add Code to make this work
    }

    public Integer count(Character individual) {
        return count(String.valueOf(individual));

    }

    public Integer count(String individual) {
        List<String> items = Arrays.asList(strand.trim().split(individual));

        System.out.println(items.toArray()[0]);
        if (items.isEmpty()) {
            return 0;
        } else if (items.toArray()[0] == "" ) {
            return 0;
        }else {
            return items.toArray().length;
        }
    }

    public Map<String, Integer> nucleotideCounts() {

        Map<String, Integer> dictReturn = new LinkedHashMap<String, Integer>();

        List<String> atgc =  Arrays.asList("ACGT".split(""));
        //atgc.remove(0);

        for (String each: atgc){
            if (!each.equals("")) {
                Integer result = Arrays.asList(strand.trim().split(each)).size() - 1;
                if (strand.contains(each)) {
                    dictReturn.put(each, result);
                } else {
                    dictReturn.put(each, 0);
                }
            }
        }
        return dictReturn;
        // TODO: 9/25/15
        // Add Code to make this work
    }
}