m = Text1.Text
For i= 1 To Len(m)
c= Mid(m,i, 1)
If c>= "0" And c<= "9" And i Mod 2 = 0 Then k=1 Else k= 2
a(k)= a(k)+ 1
Next i
数组a各元素的初始值都为0,文本框Text1上输入内容为“9+ ILM2019IT”(不包含双引号)。该程序段运行后,a(2)的值为( )
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