我如何在Lua中压缩一个3维数组？

-- 压缩函数
function compressArray(array)
  local compressedArray = {}
  local compressedData = ""
  
  -- 将3维数组转换为字符串
  local arrayString = table.concat(array, ",")
  
  -- 使用LZ77算法压缩字符串
  local compressedString = lz77.compress(arrayString)
  
  -- 将压缩后的字符串转换为字节数组
  for i = 1, #compressedString do
    local byte = string.byte(compressedString, i)
    table.insert(compressedArray, byte)
  end
  
  -- 将字节数组转换为字符串
  for i = 1, #compressedArray do
    compressedData = compressedData .. compressedArray[i] .. ","
  end
  
  return compressedData
end

-- 解压缩函数
function decompressArray(compressedData)
  local compressedArray = {}
  local decompressedArray = {}
  
  -- 将压缩数据字符串转换为字节数组
  for byte in compressedData:gmatch("[^,]+") do
    table.insert(compressedArray, tonumber(byte))
  end
  
  -- 将字节数组转换为字符串
  local compressedString = string.char(unpack(compressedArray))
  
  -- 使用LZ77算法解压缩字符串
  local decompressedString = lz77.decompress(compressedString)
  
  -- 将解压缩后的字符串转换为3维数组
  for value in decompressedString:gmatch("[^,]+") do
    table.insert(decompressedArray, tonumber(value))
  end
  
  return decompressedArray
end

-- 示例使用
local array = {
  {{1, 2, 3}, {4, 5, 6}},
  {{7, 8, 9}, {10, 11, 12}}
}

-- 压缩数组
local compressedData = compressArray(array)
print("压缩后的数据：" .. compressedData)

-- 解压缩数组
local decompressedArray = decompressArray(compressedData)
print("解压缩后的数组：")
for i = 1, #decompressedArray do
  for j = 1, #decompressedArray[i] do
    for k = 1, #decompressedArray[i][j] do
      print(decompressedArray[i][j][k])
    end
  end
end