- update kluent
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commit
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@ -26,7 +26,7 @@
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object Config {
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object Versions {
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val arrow = "0.8.2"
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val kluent = "1.48"
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val kluent = "1.49"
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val koin = "1.0.2"
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val junit = "5.4.2"
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val spek = "2.0.1"
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51
src/main/kotlin/it/norangeb/algorithms/exercises/KMin.kt
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51
src/main/kotlin/it/norangeb/algorithms/exercises/KMin.kt
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@ -0,0 +1,51 @@
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/*
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* MIT License
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*
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* Copyright (c) 2019 norangebit
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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package it.norangeb.algorithms.exercises
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import arrow.core.None
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import arrow.core.Option
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import it.norangeb.algorithms.datastructures.queue.priority.BinaryHeap
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class KMin<T : Comparable<T>>(private val k: Int) {
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private val heap = BinaryHeap.createMaxPriorityQueue<T>()
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fun insert(elem: T): Option<T> {
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heap.peek().fold(
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{ heap.insert(elem) },
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{
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if (elem < it || heap.size() < k)
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heap.insert(elem)
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})
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if (heap.size() > k)
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heap.pop()
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if (heap.size() < k)
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return None
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return heap.peek()
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}
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}
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56
src/test/kotlin/it/norangeb/algorithms/exercises/KMinTest.kt
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56
src/test/kotlin/it/norangeb/algorithms/exercises/KMinTest.kt
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@ -0,0 +1,56 @@
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/*
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* MIT License
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*
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* Copyright (c) 2019 norangebit
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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package it.norangeb.algorithms.exercises
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import arrow.core.None
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import arrow.core.Some
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import org.amshove.kluent.`should be`
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import org.amshove.kluent.shouldEqual
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import org.junit.jupiter.api.Test
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class KMinTest {
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@Test
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fun test() {
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val input = listOf(15, 17, 9, 12, 22, 4, 73, 87, 12, 5)
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val kmin = KMin<Int>(3)
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val result = input.map { kmin.insert(it) }
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result shouldEqual listOf(
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None,
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None,
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Some(17),
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Some(15),
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Some(15),
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Some(12),
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Some(12),
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Some(12),
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Some(12),
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Some(9)
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)
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}
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}
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