Counting tetranucleotide frequency

Rosalind Problem

Given: A DNA string s of length at most 1000 nt.

Return: Four integers (separated by spaces) counting the respective number of times that the symbols 'A', 'C', 'G', and 'T' occur in \(s\).

Sample Dataset

AGCTTTTCATTCTGACTGCAACGGGCAATATGTCTCTGTGTGGATTAAAAAAAGAGTGTCTGATAGCAGC

Sample Output

20 12 17 21

Python Playground


  s = 'GACGCGGCGCACACAGAGGCGACTACGGTTTCTTGCAATACACTGAGGACATGGCGCGGCAGATGTTTTCGGTTTATCCACTAGCCTGTGGCAGGGTTGTGTGATGCAGGATGCTCGTGCGTCTTTAGCGTAAGGCGCGGTTTCGGTGCCACTCCAGCACCCTGCCAAGGCGTCCTCGAGCAAACATAATTATTACACCTAATTACGGCCTTAAGTTTCGCGAGGGGAGGGACTTGATGAAGAAGCAGCATATCTACTTCAAGCTCTCGAGAATCTTATTTGACCGCTTGCCGCAGTATTAGCTAATACAAAAGCTGTCCCTGGTTAACGAATAGATTGAGCATGGGCCGCCAAACTATTTTTATCTTGACCTTCACATAACGTTCAACCCACGGCGAACGGACGACTAGCACCCCTCGTACGCACCAATGGATAAGAGCGCCATGGAAACCCTACTGACGTGCCGGGGAGGCTAATTCACGGATAGCAGAAGGGAGGGATGGCCAGAGACGTAAAAACCAAGTTCAGGCTGTAGAAGTGAGTCTGCCAATGATTTCCTGTTTTTCCTTAGTGAAAGCGCTGATTATGTTAATGAATGCCTAGACCTCTGGACTCGTACAGCAAGGTGCCACCTCAATAAAGAAGATATCATTAATATGCTCAGCCAGCCTGATCATCGTCAACATTAGTCAGAAAGAGCCGGGCTGGATTAGGTGTCGGAGAGACTGTTCAGAAACCTGATAAGCTATATGTGTAGACTGGCCTCAAATGGACTATTGGCAGGGAGACAGTTACTATAGACGGCTGGTCCGTCAACCCGAGACGTTACTCGGGTCAGACACTAAGCGATGGTGACCAGCACATAAGCCGACTTATTATCGAATCAATGATTGAATCTTGGCAGTTAACGTAGAATTGACTGTGTCTGCTTGATAACGGC'


    # s is given as a input DNA string
    # Write your code here


    ans = "255 217 242 226"
    Ex().has_output(ans)
    success_msg("Great job!")