74 lines
2.3 KiB
Kotlin
74 lines
2.3 KiB
Kotlin
/*
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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 java.io.PrintStream
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import kotlin.math.roundToInt
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import kotlin.random.Random
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import kotlin.system.measureNanoTime
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fun main(args: Array<String>) {
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val out = try {
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PrintStream(args[0])
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} catch (e: Exception) {
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System.out
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}
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TimeMeasure(out)
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.run()
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}
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class TimeMeasure(private val out: PrintStream) {
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fun run() {
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val random = Random(System.currentTimeMillis())
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(0 until NUMBER_OF_ITERATION).map {
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val numberOfSamples = DEFAULT_SAMPLES *
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Math.pow(GROWTH_FACTOR.toDouble(), it.toDouble())
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.roundToInt()
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val listOfInt = ArrayList<Int>()
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repeat(numberOfSamples) {
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listOfInt.add(random.nextInt(0, 100))
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}
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val arrayIn = listOfInt.toIntArray()
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val totalTime = measureNanoTime {
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PrefixAverage.prefixAverage(arrayIn)
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}
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Pair(numberOfSamples, totalTime)
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}.forEach {
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out.println("${it.first}, ${it.second}")
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}
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}
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companion object {
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const val DEFAULT_SAMPLES = 8000
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const val NUMBER_OF_ITERATION = 15
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const val GROWTH_FACTOR = 2
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}
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} |