using System;
using System.Collections.Generic;
using System.Text;
public sealed class ByteUtils
{
private ByteUtils()
{
}
public static int IndexOf(byte[] array, byte[] pattern, int offset)
{
int success = 0;
for (int i = offset; i < array.Length; i++)
{
if (array[i] == pattern[success])
{
success++;
}
else
{
success = 0;
}
if (pattern.Length == success)
{
return i - pattern.Length + 1;
}
}
return -1;
}
}