45 lines
984 B
C#
45 lines
984 B
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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namespace UniversalEditor.Compression.Common
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{
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public static class BurrowsWheelerTransform
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{
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private static char[][] getRotations(char[] array)
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{
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char[][] cz = new char[array.Length][];
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for (int i = 0; i < cz.Length; i++)
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{
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cz[i] = BurrowsWheelerTransform.getRotation(array, i);
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}
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return cz;
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}
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private static char[] getRotation(char[] array, int rotation)
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{
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char[] oldArray = new char[array.Length];
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char[] newArray = new char[array.Length];
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array.CopyTo(oldArray, 0);
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array.CopyTo(newArray, 0);
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for (int i = 0; i < newArray.Length; i++)
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{
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int rot = 0;
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if (i + rotation < newArray.Length)
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{
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rot = i + rotation;
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}
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else
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{
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rot = i + rotation - newArray.Length;
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}
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newArray[i] = oldArray[rot];
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}
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return newArray;
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}
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public static void Test()
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{
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char[] sorted = Sorting.AlphabeticSort("FAAOD".ToCharArray());
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}
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}
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}
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