我需要压缩一个字节数组。因此我写了这段代码:
class Program
{
static void Main()
{
var test = "foo bar baz";
var compressed = Compress(Encoding.UTF8.GetBytes(test));
var decompressed = Decompress(compressed);
Console.WriteLine("size of initial table = " + test.Length);
Console.WriteLine("size of compressed table = " + compressed.Length);
Console.WriteLine("size of decompressed table = " + decompressed.Length);
Console.WriteLine(Encoding.UTF8.GetString(decompressed));
Console.ReadKey();
}
static byte[] Compress(byte[] data)
{
using (var compressedStream = new MemoryStream())
using (var zipStream = new GZipStream(compressedStream, CompressionMode.Compress))
{
zipStream.Write(data, 0, data.Length);
zipStream.Close();
return compressedStream.ToArray();
}
}
static byte[] Decompress(byte[] data)
{
using (var compressedStream = new MemoryStream(data))
using (var zipStream = new GZipStream(compressedStream, CompressionMode.Decompress))
using (var resultStream = new MemoryStream())
{
zipStream.CopyTo(resultStream);
return resultStream.ToArray();
}
}
}
问题在于我得到了这个输出:我不明白为什么压缩后的数组大小大于解压后的数组大小!
有什么想法吗?
编辑
在@spender的评论之后:如果我更改test
字符串,例如:
var test = "foo bar baz very long string for example hdgfgfhfghfghfghfghfghfghfghfghfghfghfhg";
我得到了不同的结果。那么,需要压缩的初始数组的最小大小是多少?