Rodrigo Vallejos included in Rosalind

2023-05-16 2023-05-16 133 words One minute

Python

Solution 1

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def count_nucleotides(dna):
    return (dna.count("A"), 
			dna.count("C"), 
			dna.count("G"), 
			dna.count("T")) 

Solution 2

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from collections import Counter

def count_nucleotides(dna):
    counts = Counter(dna)
    return (counts["A"], counts["C"], counts["G"], counts["T"])

Solution 3

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def count_nucleotides(dna):
    a, c, g, t = 0, 0, 0, 0
    for nt in dna:
        if nt == "A":
            a += 1
        elif nt == "C":
            c += 1
        elif nt == "G":
            g += 1
        elif nt == "T":
            t += 1
    return (a, c, g, t)

Solution 4

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def count_nucleotides(dna):
    index = 0
    counts = {}
    while index < len(dna):
        counts[dna[index]] = counts.get(dna, 0) + 1
        index += 1
    return (counts["A"], counts["C"], counts["G"], counts["T"])