Contents

class Dna(strand: String) {

    init {
        require(strand.matches(Regex("^[$nucleotides]*$")), { "DNA sequence contains invalid nucleotides sequence." })
    }

    companion object Dna {
        val nucleotides = "ATCG"
        val emptyNucleotideCounts = nucleotides.map { it to 0 }.toMap()
    }

    val nucleotideCounts: Map<Char, Int> by lazy {
        emptyNucleotideCounts + strand.groupBy { it }.mapValues { it.value.size }
    }

}

Version data entries

126 entries across 126 versions & 1 rubygems

Version	Path
trackler-2.2.1.119	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.118	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.117	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.116	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.115	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.114	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.113	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.111	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.110	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.109	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.108	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.107	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.106	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.105	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.104	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.103	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.102	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.101	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.100	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.99	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt