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