Sha256: 78109b6c90c7400d4ddefa9201e278d5d86713a9fbb862db388feacdc16d08f1
Contents?: true
Size: 1.19 KB
Versions: 78
Compression:
Stored size: 1.19 KB
Contents
import java.util.HashMap;
import java.util.Map;
final class NucleotideCounter {
private final String sequence;
NucleotideCounter(String sequence) {
this.sequence = sequence;
for (char c : sequence.toCharArray()) {
if (isCountable(c)) {
throw new IllegalArgumentException(c + " is not a nucleotide");
}
}
}
int count(char base) {
if (isCountable(base)) {
throw new IllegalArgumentException(base + " is not a nucleotide");
}
try {
return nucleotideCounts().get(base);
} catch (NullPointerException e) {
return 0;
}
}
private static boolean isCountable(char base) {
final String COUNTABLE_NUCLEOTIDES = "ACGT";
return COUNTABLE_NUCLEOTIDES.indexOf(base) == -1;
}
Map<Character, Integer> nucleotideCounts() {
Map<Character, Integer> counts = emptyCounts();
for (char c : sequence.toCharArray()) {
counts.put(c, counts.get(c) + 1);
}
return counts;
}
private static Map<Character, Integer> emptyCounts() {
Map<Character, Integer> counts = new HashMap<Character, Integer>();
counts.put('A', 0);
counts.put('C', 0);
counts.put('T', 0);
counts.put('G', 0);
return counts;
}
}
Version data entries
78 entries across 78 versions & 1 rubygems