54 lines
1.0 KiB
C#
54 lines
1.0 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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class TestGroupBy
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{
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public static int Main ()
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{
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int[] int_array = new int [] { 0, 1, 2, 3, 4 };
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IEnumerable<IGrouping<int, int>> e;
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// group by i % 2 from 1
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e = from int i in int_array group 1 by i % 2;
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List<IGrouping<int, int>> output = e.ToList ();
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if (output.Count != 2)
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return 1;
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foreach (IGrouping<int, int> ig in e) {
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Console.WriteLine (ig.Key);
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foreach (int value in ig) {
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Console.WriteLine ("\t" + value);
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if (value != 1)
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return 2;
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}
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}
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// group by i % 2 from i
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e = from int i in int_array group i by i % 2;
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output = e.ToList ();
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if (output.Count != 2)
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return 1;
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int[] results_a = new int[] { 0, 2, 4, 1, 3 };
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int pos = 0;
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foreach (IGrouping<int, int> ig in e) {
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Console.WriteLine (ig.Key);
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foreach (int value in ig) {
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Console.WriteLine ("\t" + value);
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if (value != results_a [pos++])
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return 3;
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}
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}
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Console.WriteLine ("OK");
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return 0;
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}
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}
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