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I feel really difficult in the questions, while someone could complete it within 5 hours, so far I have only 2 questions after 10 hours.
I realized these questions are REAL problems for booking.com, which means I would meet them in future too, how could I solve them?
Some questions I don‘t even have any idea on solution. Keep going.
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原文地址：http://www.cnblogs.com/t--c---/p/4784433.html
