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-2.2.1.139	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.138	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.137	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.136	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.135	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.134	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.133	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.132	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.131	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.130	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.129	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.128	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.127	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.126	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.125	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.124	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.123	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.122	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.121	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt
trackler-2.2.1.120	tracks/kotlin/exercises/nucleotide-count/.meta/src/reference/kotlin/Dna.kt