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题目描述: Given any string of N (≥5) characters, you are asked to form the characters into the shape of U. For example, helloworld can be printed as: h d 阅读全文
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题目描述: To store English words, one method is to use linked lists and store a word letter by letter. To save some space, we may let the words share the 阅读全文
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题目描述: Being unique is so important to people on Mars that even their lottery is designed in a unique way. The rule of winning is simple: one bets on a 阅读全文
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题目描述: A traveler's map gives the distances between cities along the highways, together with the cost of each highway. Now you are supposed to write a 阅读全文