Well, a typical backtracking problem. Make sure you are clear with the following three problems:What is a partial solution and when is it finished? --...
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其他好文 时间：
2015-06-17 00:34:16
阅读次数：
142
Problem DescriptionEddy usually writes articles ,but he likes mixing the English letter uses, for example "computer science" is written frequently "co...
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其他好文 时间：
2015-06-16 21:07:10
阅读次数：
140
Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephon...
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其他好文 时间：
2015-06-14 21:13:20
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125
题目：Given two words (startandend), and a dictionary, find all shortest transformation sequence(s) fromstarttoend, such that:Only one letter can be chan...
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编程语言 时间：
2015-06-14 15:01:43
阅读次数：
216
Problem Description
The French author Georges Perec (1936–1982) once wrote a book, La disparition, without the letter 'e'. He was a member of the Oulipo group. A quote from the book:
Tout avait ...
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其他好文 时间：
2015-06-12 15:02:16
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98
arXivThe arXiv (pronounced "archive", as if the "X" were the Greek letter Chi, χ) is a repository of electronic preprints, known as e-prints, of scien...
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Web程序 时间：
2015-06-07 14:32:58
阅读次数：
128
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 same sublist if they share the same suffix. For...
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其他好文 时间：
2015-06-06 10:37:31
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169
Problem DescriptionEddy usually writes articles ,but he likes mixing the English letter uses, for example "computer science" is written frequently "co...
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其他好文 时间：
2015-06-05 19:09:09
阅读次数：
131
The nth term of the sequence of triangle numbers is given by, tn = ½n(n+1); so the first ten triangle numbers are:
1, 3, 6, 10, 15, 21, 28, 36, 45, 55, ...
By converting each letter in a word to a...
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其他好文 时间：
2015-06-05 12:29:01
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128
Letter Combinations of a Phone NumberTotal Accepted:40709Total Submissions:157759My SubmissionsQuestionSolutionGiven a digit string, return all possib...
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编程语言 时间：
2015-06-05 06:09:34
阅读次数：
162
