输结:4首先 c=‘A’,k=0: => k ,k=1 =>break; => c => c=B => k ,k=2 c= B k=2: => k--,k=1 => k =2,k=3 => break; => c => c=C => k ,k=4 c= C k=4: => k =2,k=6 => break; => c => c=D => k ,k=7 c= D k=7: => k=k%2,k=1 => continue; => c => c=E => k ,k=2 c= E k=2: => k=k*10,k=20 => break; => c => c=F => k ,k=21 c= F k=11:=> k=k/3,k=3 => c => c=G => k ,k=4 c=G 满足 while (c输 4。
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