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-2.2.1.159	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.158	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.157	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.156	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.155	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.154	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.153	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.152	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.151	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.150	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.149	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.148	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.147	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.146	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.145	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.144	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.143	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.142	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.141	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.140	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt