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习题 8: 打印,打印


$ ruby ex8.rb
1 2 3 4
one two three four
true false false true
%s %s %s %s %s %s %s %s %s %s %s %s %s %s %s %s
I had this thing. That you could type up right. But it didn't sing. So I said goodnight.


  1. 自己检查结果,记录你犯过的错误,并且在下个练习中尽量不犯同样的错误。
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