21 lines
802 B
Text
21 lines
802 B
Text
fun <T> modeOf(a: Array<T>) {
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val sortedByFreq = a.groupBy { it }.entries.sortedByDescending { it.value.size }
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val maxFreq = sortedByFreq.first().value.size
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val modes = sortedByFreq.takeWhile { it.value.size == maxFreq }
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if (modes.size == 1)
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println("The mode of the collection is ${modes.first().key} which has a frequency of $maxFreq")
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else {
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print("There are ${modes.size} modes with a frequency of $maxFreq, namely : ")
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println(modes.map { it.key }.joinToString(", "))
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}
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}
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fun main(args: Array<String>) {
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val a = arrayOf(7, 1, 1, 6, 2, 4, 2, 4, 2, 1, 5)
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println("[" + a.joinToString(", ") + "]")
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modeOf(a)
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println()
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val b = arrayOf(true, false, true, false, true, true)
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println("[" + b.joinToString(", ") + "]")
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modeOf(b)
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}
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