Uzi Landsmann
40 lines
1.0 KiB
Kotlin
40 lines
1.0 KiB
Kotlin
/*
|
|
* Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
|
|
* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
|
|
*/
|
|
|
|
package samples.system
|
|
|
|
import samples.*
|
|
import kotlin.system.*
|
|
|
|
class Timing {
|
|
|
|
@Sample
|
|
fun measureBlockTimeMillis() {
|
|
val numbers: List<Int>
|
|
val timeInMillis = measureTimeMillis {
|
|
numbers = buildList {
|
|
addAll(0..100)
|
|
shuffle()
|
|
sortDescending()
|
|
}
|
|
}
|
|
// here numbers are initialized and sorted
|
|
assertPrints(numbers.first(), "100")
|
|
|
|
println("(The operation took $timeInMillis ms)")
|
|
}
|
|
|
|
@Sample
|
|
fun measureBlockNanoTime() {
|
|
var sqrt = 0
|
|
val number = 1000
|
|
val timeInNanos = measureNanoTime {
|
|
while (sqrt * sqrt < number) sqrt++
|
|
}
|
|
println("(The operation took $timeInNanos ns)")
|
|
println("The approximate square root of $number is between ${sqrt - 1} and $sqrt")
|
|
}
|
|
}
|