36 lines
850 B
C#
36 lines
850 B
C#
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using BenchmarkDotNet.Attributes;
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using BenchmarkDotNet.Running;
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BenchmarkRunner.Run<LinqBenchmarks>();
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[SimpleJob, MemoryDiagnoser(false)]
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public class LinqBenchmarks
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{
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private readonly List<int> _list = Enumerable.Range(1, 1000000).ToList();
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[Benchmark]
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public int[] CustomLoop()
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{
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var array = new int[_list.Count];
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var resultIndex = 0;
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for (var index = 0; index < _list.Count; index++)
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{
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if (_list[index] % 2 == 0)
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{
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array[resultIndex++] = _list[index];
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}
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}
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Array.Resize(ref array, resultIndex);
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Array.Sort(array, (a, b) => b - a);
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return array;
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}
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[Benchmark]
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public int[] Where_OrderByDescending()
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{
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return _list.Where(i => i % 2 == 0).OrderByDescending(i => i).ToArray();
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}
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}
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