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Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, a binary tree can be u 阅读全文
posted @ 2019-11-28 22:48
自由之翼Az
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Telefraud(电信诈骗) remains a common and persistent problem in our society. In some cases, unsuspecting victims lose their entire life savings. To stop th 阅读全文
posted @ 2019-11-28 22:29
自由之翼Az
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Zhejiang University is about to celebrate her 122th anniversary in 2019. To prepare for the celebration, the alumni association (校友会) has gathered the 阅读全文
posted @ 2019-11-28 22:12
自由之翼Az
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Sexy primes are pairs of primes of the form (p, p+6), so-named since “sex” is the Latin word for “six”. (Quoted from http://mathworld.wolfram.com/Sexy 阅读全文
posted @ 2019-11-28 21:55
自由之翼Az
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