不平衡堆棧問題

上週五，我在「c＃重複console.writeline命令的問題」上接受了所有幫助。我發現所有的問題都是由「PInvokeStackImpalance」造成的。不平衡堆棧問題

我用C＃速成上的WIN7 64位機
我稱之爲是一個32位C++ DLL的ftcjtag.dll。我有這個DLL的64位版本可用。
這個DLL可以在http://www.ftdichip.com/Support/SoftwareExamples/MPSSE/FTCJTAG/FTCJTAG_200.zip下載
我剛開始編碼C＃和我迄今爲止搜索到的所有東西都讓我感到困惑，而不是幫助我。我希望你能給我一些提示，說明我的代碼有什麼問題，或者建議怎麼做。

錯誤消息：

PInvokeStackImbalance wurde erkannt。消息：對PInvoke函數「WindowsFormsApplication1！WindowsFormsApplication1.Form1 :: JTAG_GetHiSpeedDeviceNameLocIDChannel」的調用已使堆棧不平衡。這很可能是因爲託管的PInvoke簽名與非託管目標籤名不匹配。檢查PInvoke簽名的調用約定和參數是否與目標非託管簽名相匹配。

代碼：

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
using System.Runtime.InteropServices; 
using System.Threading; 




namespace WindowsFormsApplication1 
{ 
    public partial class Form1 : Form 
    { 
     uint ftStatus = FTC_SUCCESS; 
     //uint numHiSpeedDevices = 0; // 32-bit unsigned integer 
     byte[] byteHiSpeedDeviceName = new byte[MAX_NUM_DEVICE_NAME_CHARS]; 
     byte[] byteHiSpeedDeviceChannel = new byte[MAX_NUM_CHANNEL_CHARS]; 
     string hiSpeedChannel = null; 

     uint locationID = 0; 
     //UInt32 locationID = 0; 

     uint hiSpeedDeviceType = 1; 
     //UInt32 hiSpeedDeviceType = 1; 

     //uint clk_div = 0; 
     uint numBytesReturned = 0; 
     private enum HI_SPEED_DEVICE_TYPES// : uint 
     { 
      FT2232H_DEVICE_TYPE = 1, 
      FT4232H_DEVICE_TYPE = 2 
     }; 
     string hiSpeedDeviceName = null; 
     IntPtr ftHandle = IntPtr.Zero; 
     public string bPin2LowHighState { get; set; } 

     private const string App_Title = "FT2232/FT4232 JTAG Device C# .NET Test Application"; 
     private const string Dll_Version_Label = "FT2232/FT4232 JTAG DLL Version = "; 
     private const string Device_Name_Label = "Device Name = "; 

     private const uint FTC_SUCCESS = 0; 
     private const uint FTC_DEVICE_IN_USE = 27; 
     private const uint TEST_LOGIC_STATE = 1; 
     private const uint RUN_TEST_IDLE_STATE = 2; 
     private const uint MAX_NUM_DEVICE_NAME_CHARS = 100; 
     private const uint MAX_NUM_CHANNEL_CHARS = 5; 
     private const uint MAX_NUM_DLL_VERSION_CHARS = 10; 
     private const uint MAX_NUM_ERROR_MESSAGE_CHARS = 100; 
     private const uint WRITE_DATA_BUFFER_SIZE = 65536; 
     private const uint READ_DATA_BUFFER_SIZE = 65536; 
     private const uint READ_CMDS_DATA_BUFFER_SIZE = 131071; 

     byte[] WriteDataBuffer = new byte[WRITE_DATA_BUFFER_SIZE]; 
     byte[] ReadDataBuffer = new byte[READ_DATA_BUFFER_SIZE]; 

     public uint clockFrequencyHz = 0; 

     FTC_INPUT_OUTPUT_PINS LowInputOutputPinsData; 
     FTH_INPUT_OUTPUT_PINS HighInputOutputPinsData; 
     FTC_LOW_HIGH_PINS LowPinsInputData; 
     FTH_LOW_HIGH_PINS HighPinsInputData; 

     //************************************************************************** 
     // TYPE DEFINITIONS 
     //************************************************************************** 

     public struct FTC_INPUT_OUTPUT_PINS 
     { 
      public bool bPin1InputOutputState; 
      public bool bPin1LowHighState; 
      public bool bPin2InputOutputState; 
      public bool bPin2LowHighState; 
      public bool bPin3InputOutputState; 
      public bool bPin3LowHighState; 
      public bool bPin4InputOutputState; 
      public bool bPin4LowHighState; 
     } 
     public struct FTH_INPUT_OUTPUT_PINS 
     { 
      public bool bPin1InputOutputState; 
      public bool bPin1LowHighState; 
      public bool bPin2InputOutputState; 
      public bool bPin2LowHighState; 
      public bool bPin3InputOutputState; 
      public bool bPin3LowHighState; 
      public bool bPin4InputOutputState; 
      public bool bPin4LowHighState; 
      public bool bPin5InputOutputState; 
      public bool bPin5LowHighState; 
      public bool bPin6InputOutputState; 
      public bool bPin6LowHighState; 
      public bool bPin7InputOutputState; 
      public bool bPin7LowHighState; 
      public bool bPin8InputOutputState; 
      public bool bPin8LowHighState; 
     } 
     public struct FTC_LOW_HIGH_PINS 
     { 
      public bool bPin1LowHighState; 
      public bool bPin2LowHighState; 
      public bool bPin3LowHighState; 
      public bool bPin4LowHighState; 
     } 
     public struct FTH_LOW_HIGH_PINS 
     { 
      public bool bPin1LowHighState; 
      public bool bPin2LowHighState; 
      public bool bPin3LowHighState; 
      public bool bPin4LowHighState; 
      public bool bPin5LowHighState; 
      public bool bPin6LowHighState; 
      public bool bPin7LowHighState; 
      public bool bPin8LowHighState; 
     } 
     public struct FTC_CLOSE_FINAL_STATE_PINS 
     { 
      public bool bTCKPinState; 
      public bool bTCKPinActiveState; 
      public bool bTDIPinState; 
      public bool bTDIPinActiveState; 
      public bool bTMSPinState; 
      public bool bTMSPinActiveState; 
     } 

     //************************************************************************** 
     // FUNCTION IMPORTS FROM FTCJTAG DLL 
     //************************************************************************** 
     [DllImport("ftcjtag.dll", EntryPoint = "JTAG_GetDllVersion", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint GetDllVersion(byte[] pDllVersion, uint buufferSize); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_GetErrorCodeString(string language, uint statusCode, byte[] pErrorMessage, uint bufferSize); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_GetNumHiSpeedDevices(ref uint NumHiSpeedDevices); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_GetHiSpeedDeviceNameLocIDChannel(uint deviceNameIndex, byte[] pDeviceName, uint deviceNameBufferSize, ref uint locationID, byte[] pChannel, uint channelBufferSize, ref uint hiSpeedDeviceType); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_OpenHiSpeedDevice(string DeviceName, uint locationID, string channel, ref IntPtr pftHandle); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_GetHiSpeedDeviceType(IntPtr ftHandle, ref uint hiSpeedDeviceType); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_Close(IntPtr ftHandle); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_CloseDevice(IntPtr ftHandle, ref FTC_CLOSE_FINAL_STATE_PINS pCloseFinalStatePinsData); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_InitDevice(IntPtr ftHandle, uint clockDivisor); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_TurnOnDivideByFiveClockingHiSpeedDevice(IntPtr ftHandle); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_TurnOffDivideByFiveClockingHiSpeedDevice(IntPtr ftHandle); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_TurnOnAdaptiveClockingHiSpeedDevice(IntPtr ftHandle); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_TurnOffAdaptiveClockingHiSpeedDevice(IntPtr ftHandle); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_SetDeviceLatencyTimer(IntPtr ftHandle, byte timerValue); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_GetDeviceLatencyTimer(IntPtr ftHandle, ref byte timerValue); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_GetHiSpeedDeviceClock(uint ClockDivisor, ref uint clockFrequencyHz); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_GetClock(uint clockDivisor, ref uint clockFrequencyHz); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_SetClock(IntPtr ftHandle, uint clockDivisor, ref uint clockFrequencyHz); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_SetLoopback(IntPtr ftHandle, bool loopBackState); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_SetHiSpeedDeviceGPIOs(IntPtr ftHandle, bool bControlLowInputOutputPins, ref FTC_INPUT_OUTPUT_PINS pLowInputOutputPinsData, bool bControlHighInputOutputPins, ref FTH_INPUT_OUTPUT_PINS pHighInputOutputPinsData); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_GetHiSpeedDeviceGPIOs(IntPtr ftHandle, bool bControlLowInputOutputPins, out FTC_LOW_HIGH_PINS pLowPinsInputData, bool bControlHighInputOutputPins, out FTH_LOW_HIGH_PINS pHighPinsInputData); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_Write(IntPtr ftHandle, bool bInstructionTestData, uint numBitsToWrite, byte[] WriteDataBuffer, uint numBytesToWrite, uint tapControllerState); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_Read(IntPtr ftHandle, bool bInstructionTestData, uint numBitsToRead, byte[] ReadDataBuffer, ref uint numBytesReturned, uint tapControllerState); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_WriteRead(IntPtr ftHandle, bool bInstructionTestData, uint numBitsToWriteRead, byte[] WriteDataBuffer, uint numBytesToWrite, byte[] ReadDataBuffer, ref uint numBytesReturned, uint tapControllerState); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_GenerateClockPulses(IntPtr ftHandle, uint numClockPulses); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_ClearCmdSequence(); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_AddWriteCmd(bool bInstructionTestData, uint numBitsToWrite, byte[] WriteDataBuffer, uint numBytesToWrite, uint tapControllerState); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_AddReadCmd(bool bInstructionTestData, uint numBitsToRead, uint tapControllerState); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_AddWriteReadCmd(bool bInstructionTestData, uint numBitsToWriteRead, byte[] WriteDataBuffer, uint numBytesToWrite, uint tapControllerState); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_ExecuteCmdSequence(IntPtr ftHandle, byte[] ReadCmdSequenceDataBuffer, ref uint numBytesReturned); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_ClearDeviceCmdSequence(IntPtr ftHandle); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_AddDeviceWriteCmd(IntPtr ftHandle, bool bInstructionTestData, uint numBitsToWrite, byte[] WriteDataBuffer, uint numBytesToWrite, uint tapControllerState); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_AddDeviceReadCmd(IntPtr ftHandle, bool bInstructionTestData, uint numBitsToRead, uint tapControllerState); 
     [DllImport("ftcjtag.dll", CallingConvention = CallingConvention.Cdecl)] 
     static extern uint JTAG_AddDeviceWriteReadCmd(IntPtr ftHandle, bool bInstructionTestData, uint numBitsToWriteRead, byte[] WriteDataBuffer, uint numBytesToWrite, uint tapControllerState); 

     public Form1() 
     { 
      InitializeComponent(); 
     } 

     private void Form1_Load(object sender, EventArgs e) 
     { 
      LowInputOutputPinsData.bPin1InputOutputState = true; //true= Enable TCK, TMS and TDI outputs 
      LowInputOutputPinsData.bPin2InputOutputState = false; 
      LowInputOutputPinsData.bPin3InputOutputState = false; 
      LowInputOutputPinsData.bPin4InputOutputState = false; 
      LowInputOutputPinsData.bPin1LowHighState = false;  //false= Enable TCK, TMS and TDI outputs 
      LowInputOutputPinsData.bPin2LowHighState = false; 
      LowInputOutputPinsData.bPin3LowHighState = false; 
      LowInputOutputPinsData.bPin4LowHighState = false; 

      HighInputOutputPinsData.bPin1InputOutputState = false; 
      HighInputOutputPinsData.bPin2InputOutputState = false; 
      HighInputOutputPinsData.bPin3InputOutputState = false; 
      HighInputOutputPinsData.bPin4InputOutputState = false; 
      HighInputOutputPinsData.bPin5InputOutputState = false; 
      HighInputOutputPinsData.bPin6InputOutputState = false; 
      HighInputOutputPinsData.bPin7InputOutputState = false; 
      HighInputOutputPinsData.bPin8InputOutputState = false; 
      HighInputOutputPinsData.bPin1LowHighState = false; 
      HighInputOutputPinsData.bPin2LowHighState = false; 
      HighInputOutputPinsData.bPin3LowHighState = false; 
      HighInputOutputPinsData.bPin4LowHighState = false; 
      HighInputOutputPinsData.bPin5LowHighState = false; 
      HighInputOutputPinsData.bPin6LowHighState = false; 
      HighInputOutputPinsData.bPin7LowHighState = false; 
      HighInputOutputPinsData.bPin8LowHighState = false; 

      ftStatus = JTAG_GetHiSpeedDeviceNameLocIDChannel(0, byteHiSpeedDeviceName, MAX_NUM_DEVICE_NAME_CHARS, ref locationID, byteHiSpeedDeviceChannel, MAX_NUM_CHANNEL_CHARS, ref hiSpeedDeviceType); 
      if (ftStatus != 0) error(Convert.ToInt32(ftStatus)); 
      hiSpeedChannel = Encoding.ASCII.GetString(byteHiSpeedDeviceChannel);// Trim strings to first occurrence of a null terminator character 
      hiSpeedChannel = hiSpeedChannel.Substring(0, hiSpeedChannel.IndexOf("\0")); 
      hiSpeedDeviceName = Encoding.ASCII.GetString(byteHiSpeedDeviceName);// Trim strings to first occurrence of a null terminator character 
      hiSpeedDeviceName = hiSpeedDeviceName.Substring(0, hiSpeedDeviceName.IndexOf("\0"));// The ftHandle parameter is a pointer to a variable of type DWORD ie 32-bit unsigned integer 

      ftStatus = JTAG_OpenHiSpeedDevice(hiSpeedDeviceName, locationID, hiSpeedChannel, ref ftHandle); 
      if (ftStatus != 0) error(Convert.ToInt32(ftStatus)); 

      ftStatus = JTAG_InitDevice(ftHandle, 0); 
      if (ftStatus != 0) error(Convert.ToInt32(ftStatus)); 

      ftStatus = JTAG_TurnOffDivideByFiveClockingHiSpeedDevice(ftHandle); 
      if (ftStatus != 0) error(Convert.ToInt32(ftStatus)); 

      ftStatus = JTAG_SetClock(ftHandle, 6, ref clockFrequencyHz); 
      if (ftStatus != 0) error(Convert.ToInt32(ftStatus)); 

      ftStatus = JTAG_SetHiSpeedDeviceGPIOs(ftHandle, true, ref LowInputOutputPinsData, true, ref HighInputOutputPinsData); 
      if (ftStatus != 0) error(Convert.ToInt32(ftStatus)); 

     } 

     private void button1_Click(object sender, EventArgs e) 
     { 

     } 

     void error(int e) 
     { 
      switch (e) 
      { 
       case 0: Console.WriteLine("FTC_SUCCESS 0 // FTC_OK"); break; 
       case 1: Console.WriteLine("FTC_INVALID_HANDLE"); break; 
       case 2: Console.WriteLine("FTC_DEVICE_NOT_FOUND"); break; 
       case 3: Console.WriteLine("FTC_DEVICE_NOT_OPENED"); break; 
       case 4: Console.WriteLine("FTC_IO_ERROR"); break; 
       case 5: Console.WriteLine("FTC_INSUFFICIENT_RESOURCES"); break; 
       case 20: Console.WriteLine("FTC_FAILED_TO_COMPLETE_COMMAND"); break; 
       case 21: Console.WriteLine("FTC_FAILED_TO_SYNCHRONIZE_DEVICE_MPSSE"); break; 
       case 22: Console.WriteLine("FTC_INVALID_DEVICE_NAME_INDEX"); break; 
       case 23: Console.WriteLine("FTC_NULL_DEVICE_NAME_BUFFER_POINTER"); break; 
       case 24: Console.WriteLine("FTC_DEVICE_NAME_BUFFER_TOO_SMALL"); break; 
       case 25: Console.WriteLine("FTC_INVALID_DEVICE_NAME"); break; 
       case 26: Console.WriteLine("FTC_INVALID_LOCATION_ID"); break; 
       case 27: Console.WriteLine("FTC_DEVICE_IN_USE"); break; 
       case 28: Console.WriteLine("FTC_TOO_MANY_DEVICES"); break; 
       case 29: Console.WriteLine("FTC_NULL_CHANNEL_BUFFER_POINTER"); break; 
       case 30: Console.WriteLine("FTC_CHANNEL_BUFFER_TOO_SMALL"); break; 
       case 31: Console.WriteLine("FTC_INVALID_CHANNEL"); break; 
       case 32: Console.WriteLine("FTC_INVALID_TIMER_VALUE"); break; 
       case 33: Console.WriteLine("FTC_INVALID_CLOCK_DIVISOR"); break; 
       case 34: Console.WriteLine("FTC_NULL_INPUT_OUTPUT_BUFFER_POINTER"); break; 
       case 35: Console.WriteLine("FTC_INVALID_NUMBER_BITS"); break; 
       case 36: Console.WriteLine("FTC_NULL_WRITE_DATA_BUFFER_POINTER"); break; 
       case 37: Console.WriteLine("FTC_INVALID_NUMBER_BYTES"); break; 
       case 38: Console.WriteLine("FTC_NUMBER_BYTES_TOO_SMALL"); break; 
       case 39: Console.WriteLine("FTC_INVALID_TAP_CONTROLLER_STATE"); break; 
       case 40: Console.WriteLine("FTC_NULL_READ_DATA_BUFFER_POINTER"); break; 
       case 41: Console.WriteLine("FTC_COMMAND_SEQUENCE_BUFFER_FULL"); break; 
       case 42: Console.WriteLine("FTC_NULL_READ_CMDS_DATA_BUFFER_POINTER"); break; 
       case 43: Console.WriteLine("FTC_NO_COMMAND_SEQUENCE"); break; 
       case 44: Console.WriteLine("FTC_INVALID_NUMBER_CLOCK_PULSES"); break; 
       case 45: Console.WriteLine("FTC_INVALID_NUMBER_SINGLE_CLOCK_PULSES"); break; 
       case 46: Console.WriteLine("FTC_INVALID_NUMBER_TIMES_EIGHT_CLOCK_PULSES"); break; 
       case 47: Console.WriteLine("FTC_NULL_CLOSE_FINAL_STATE_BUFFER_POINTER"); break; 
       case 48: Console.WriteLine("FTC_NULL_DLL_VERSION_BUFFER_POINTER"); break; 
       case 49: Console.WriteLine("FTC_DLL_VERSION_BUFFER_TOO_SMALL"); break; 
       case 50: Console.WriteLine("FTC_NULL_LANGUAGE_CODE_BUFFER_POINTER"); break; 
       case 51: Console.WriteLine("FTC_NULL_ERROR_MESSAGE_BUFFER_POINTER"); break; 
       case 52: Console.WriteLine("FTC_ERROR_MESSAGE_BUFFER_TOO_SMALL"); break; 
       case 53: Console.WriteLine("FTC_INVALID_LANGUAGE_CODE"); break; 
       case 54: Console.WriteLine("FTC_INVALID_STATUS_CODE"); break; 
       default: Console.WriteLine("FTC: Unknown error occured."); break; 
      } 
      System.Environment.Exit(-1); 
     } 
    } 
}

來源

2011-03-01 Dirk

可以顯示C++ JTAG_GetHiSpeedDeviceNameLocIDChannel簽名 – Stecya

您好Stecya，我在哪裏可以找到簽名？ – Dirk

你有.h文件提供與c + + dll嗎？ – Stecya

自從我上次使用PInvoke以來，我已經有很長的一段時間了，但是我相信你的問題依賴於錯誤消息提示的問題，因爲你正在打包的DLL的調用約定。

快速查看FTCJTAG.dll的來源，顯示所有方法都標記爲WINAPI。這意味着他們使用stdcall調用約定。

您的C＃代碼通過告訴PInvoke使用cdecl調用約定來導入這些函數。

如果你不熟悉調用約定的概念，維基百科有一個體面的寫法here。

總結：您的代碼和您所調用的DLL不同意如何發送其他信息以及誰負責清理。您需要使用stdcall約定從dll導入函數。

來源

2011-03-01 13:24:19

你好，Bethor，謝謝你的維基鏈接。我會嘗試stdcall thingy。 – Dirk

你好Bethor，使用StdCall做了訣竅:-)。謝謝！ – Dirk

問題是你正在編譯什麼的...如果你正在編譯到86，然後，如果編譯「任何CPU」您的32位DLL將其工作我認爲是默認的...你的代碼將運行爲64位，你將無法使用32位的DLL ...切換編譯設置爲x86或使用64位的DLL。

來源

2011-03-01 13:17:03

你好jsobo，我認爲express不能編譯x86以外的任何東西。 – Dirk

不平衡堆棧問題

回答

相關問題