32 lines
1.1 KiB
C#
32 lines
1.1 KiB
C#
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namespace AdventOfCode.Utils;
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public static class Extensions
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{
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/// <summary>
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/// Returns a slice of the given list
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/// </summary>
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/// <param name="list">The list you pretend to slice</param>
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/// <param name="startIndex">The first index of the slice</param>
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/// <param name="endIndex">The index after the last index of the slice</param>
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/// <returns></returns>
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public static List<T> Sublist<T>(this List<T> list, int startIndex, int endIndex)
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{
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List<T> result = new List<T>();
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for (int i = startIndex; i < endIndex; i++)
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result.Add(list[i]);
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return result;
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}
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/// <summary>
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/// Returns a column of a give matrix list
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/// </summary>
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/// <param name="list">2 dimensions list</param>
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/// <param name="column">Column index</param>
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/// <returns></returns>
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public static List<T> GetColumn<T>(this List<List<T>> list, int column)
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{
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List<T> result = new List<T>();
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foreach (List<T> row in list) result.AddRange(row.Where((t, i) => i == column));
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return result;
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}
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}
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