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-2.2.1.180	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.179	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.178	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.177	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.176	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.175	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.174	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.173	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.172	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.171	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.170	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.169	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.167	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.166	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.165	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.164	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.163	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.162	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.161	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.160	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt