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2001 text3 Why do so many Americans distrust what they read in their newspapers? The American Society of Newspaper Editors is trying to answer this 阅读全文
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Dijkstra's algorithm is one of the very famous greedy algorithms. It is used for solving the single source shortest path problem which gives the short 阅读全文
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7-1 Forever (20分) "Forever number" is a positive integer A with K digits, satisfying the following constrains: the sum of all the digits of A is m; th 阅读全文
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7-3 Postfix Expression (25分) Given a syntax tree (binary), you are supposed to output the corresponding postfix expression, with parentheses reflectin 阅读全文