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40 lines
1.2 KiB
Swift
40 lines
1.2 KiB
Swift
//===--- ArraySubscript.swift ---------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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// This test checks the performance of modifying an array element.
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import TestsUtils
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@inline(never)
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public func run_ArraySubscript(_ N: Int) {
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SRand()
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let numArrays = 200*N
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let numArrayElements = 100
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func bound(_ x: Int) -> Int { return min(x, numArrayElements-1) }
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var arrays = [[Int]](repeating: [], count: numArrays)
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for i in 0..<numArrays {
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for _ in 0..<numArrayElements {
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arrays[i].append(Int(truncatingBitPattern: Random()))
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}
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}
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// Do a max up the diagonal.
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for i in 1..<numArrays {
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arrays[i][bound(i)] =
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max(arrays[i-1][bound(i-1)], arrays[i][bound(i)])
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}
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CheckResults(arrays[0][0] <= arrays[numArrays-1][bound(numArrays-1)],
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"Incorrect results in QuickSort.")
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}
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