m1=1:m2=n
Do While m1< m2
For i=m2 To m1+1 Step -1
If a(i)( a(i-1)Then t= a(i): a(i)=a(i-1): a(i-1)=t
Next i
①
If a(i)> a(i +1). Then t= a(i): a(i)=a(i+1): a(i+1)=t
m1=m1+1
m2=m2-1
Loop
要使程序实现上述算法思想,则代码中①处的语句是( )
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