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-2.2.1.78	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.77	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.76	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.75	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.74	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.73	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.72	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.71	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.70	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.69	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.68	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.67	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.66	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.65	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.64	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.63	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.62	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.61	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.60	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.59	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt