這是我寫ㄉ程式~要變成插入排序的地方有問題~剛開始先從0到50取10ㄍ亂數在從小排到大
Label1顯示那時ㄍ亂數
Label2顯示已用插入排列從小排到大的結果
ListBox1顯示Label2計算的過程
下面是我做的程式但是在Label2的地方就有問題ㄌ
請幫我想想辦法~因為剛學老師又沒說ㄉ很清楚所以還不怎ㄇ懂


void __fastcall TForm1::Button1Click(TObject *Sender)
{
if (flag == 0)
{
Label1->Caption="";
Label2->Caption=" ";
ListB ..

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.h檔
//---------------------------------------------------------------------------

#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:      // IDE-managed Components
  TButton *Button1;
  TLabel *Label1;
  TLabel *Label2;
  TListBox *ListBox1;
  void __fastcall Button1Click(TObject *Sender);
private:      // User declarations
  int a[10];
  int flag;
public:            // User declarations
  __fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif



.cpp檔
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
  : TForm(Owner)
{
  // 初始化
  Label1->Caption = "";
  Label2->Caption = "";
  ListBox1->Items->Clear();
  Button1->Caption = "產生列數";
  randomize();
  flag = 0;
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
  if (flag == 0) {
    // 隨機產生值
    Label1->Caption = "";
    Label2->Caption = "";
    ListBox1->Items->Clear();
    for (int i = 0; i < 10; i++) {
        a = random(50);
        Label1->Caption = Label1->Caption + a + ",";
    }
    Button1->Caption = "插入排列";
  }
  else {
    Label2->Caption = "";
    // insertion_sort
    for (int i = 0; i < 10 ; i++) {
        int next = a ;
        int j;
        for (j = i - 1 ; j >= 0 && next < a[j] ; j--) {
          a[j+1] = a[j];
        }
        a[j + 1] = next ;

        Label2->Caption = "";
        for (int m = 0; m < 10 ; m++) {
          Label2->Caption = Label2->Caption + a[m] + ",";
        }
        ListBox1->Items->Add(Label2->Caption);
    }
    Button1->Caption = "產生列數";
  }
  flag = 1 - flag;
}