1. (2019高三上·浙江月考) 有如下程序段：

Const n=8

a(1)=33：a(2)=8：a(3)=49：a(4)=25：a(5)=56：a(6)=3：a(7)=12：a(8)=41

x=n\2

For i=x To 2 Step-1

    For j=1 To i - 1

        If a(j)< a(i) Then

            t=a(j)：a(j)=a(i)：a(i)=t

        End If

    Next j

Next i

i =n

Do While i>x+ 1

    k=i

    For j=i-1Tox+1 Step -1

        If a(j)>a(k) Then k=j

    Next j

    If k<>I Then

        t=a(k)：a(k)=a(i)：a(i)=t

    End If

    i=i-1

Loop

执行完这段代码后，数组a中各个元素的值为(    )