实现上述功能的 VB 程序如下，但加框处代码有错，请改正。

Const n = 10

Dim a(1 To n) As Integer

Private Sub Command1_Click()

    Dim i As Integer, j As Integer

    Dim temp As Integer, flag As Boolean

    '读取一组正整数，存储在数组a中，代码略

    i = 1: j = n

    temp = a(j): flag = True

    Do While i < j

        If flag Then

            If a(i) Mod 2 = 0 Then

                a(j) = a(i)

                j=j-1

                flag=Not flag

            Else

                    '⑴

            End If

        Else

            If a(j) Mod 2 = 1 Then

                a(i)=a(j)

                flag=Not flag

            Else

                j=j-1

            End If

        End If

    Loop

         '⑵

    '依次输出排序后的数据，代码略。

End Sub

⑴{#blank#}1{#/blank#} ⑵{#blank#}2{#/blank#}

实现上述功能的VB程序如下，但划线部分代码有错，请改正。

Private Sub Command1_Click()

  Dim x(1 To 100) As Single， y(1 To 100) As Single

  Dim tmp As Single， length As Single， sum As Single， x1 As Single， y1 As Single

  Dim i As Integer， j As Integer， k As Integer

Randomize 

List1.Clear

  k = Val(Text1.Text)

  For i = 1 To k

      x(i) = Int(Rnd * 90) / 10 + 1

      y(i) = Int(Rnd * 90) / 10 + 1

      List1.AddItem "X：" + Str(x(i)) + "   " + "Y：" + Str(y(i))

  Next i

  For i = 1 To k - 1

      For j = 1 To k - i

          If x(j) > x(j + 1) Then

              x(i)=x(i) + x(j)

              x(j) = x(i) - x(j)

              x(j) = x(i) + x(j)   ‘①

              tmp = y(j)

              y(j) = y(j + 1)

              y(j + 1) = tmp

          End If

      Next j

  Next i

  sum = 0： length = 0

  For i = 1 To k - 1

      x1 = (x(i) - x(1)) ^ 2     ‘②

 '变量y1计算方法同x1，代码略

      length = Sqr(x1 + y1)

      sum = sum + length

  Next i

  Text2.Text = Str(Int(sum * 10) / 10)

End Sub

①{#blank#}1{#/blank#} ②{#blank#}2{#/blank#} 

编写VB程序，实现上述挑选、组队功能。运行程序，在列表框List1中显示m名身高大于等于175cm的学生信息，且根据体重数值降序排序。单击“组队”按钮，在符合条件的情况下尽可能多的两两组队，并将组队结果显示在列表框List2中。程序运行界面如图所示，实现上述功能的VB程序如下。

请回答下列问题：