Contents

data class Clock(private var hours: Int, private var minutes: Int) {

    companion object {
        private val MINUTES_IN_AN_HOUR = 60
        private val HOURS_IN_A_DAY = 24
    }

    init {
        sanitiseTime()
    }

    override fun toString(): String {
        return "${hours.toTimeString()}:${minutes.toTimeString()}"
    }

    fun add(minutes: Int) {
        this.minutes += minutes
        sanitiseTime()
    }

    private fun sanitiseTime() {
        while (minutes < 0) {
            minutes += MINUTES_IN_AN_HOUR
            hours--
        }

        while (hours < 0) {
            hours += HOURS_IN_A_DAY
        }

        val minutesOverflow = minutes / MINUTES_IN_AN_HOUR
        minutes %= MINUTES_IN_AN_HOUR
        hours = (hours + minutesOverflow) % HOURS_IN_A_DAY
    }

}

private fun Int.toTimeString(): String {
    return toString().padStart(length = 2, padChar = '0')
}

Version data entries

218 entries across 218 versions & 1 rubygems

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