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LeetCode 0046. Permutations全排列【Medium】【Python】【回溯】【DFS】 Problem "LeetCode" Given a collection of distinct integers, return all possible permutations. 阅读全文
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LeetCode 0079. Word Search单词搜索【Medium】【Python】【DFS】 Problem "LeetCode" Given a 2D board and a word, find if the word exists in the grid. The word can 阅读全文
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LeetCode 0017. Letter Combinations of a Phone Number电话号码的字母组合【Medium】【Python】【回溯】【DFS】【暴力】 Problem "LeetCode" Given a string containing digits from in 阅读全文
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LeetCode 0093. Restore IP Addresses复原IP地址【Medium】【Python】【回溯】【DFS】【暴力】 Problem "LeetCode" Given a string containing only digits, restore it by returni 阅读全文
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LeetCode 0994. Rotting Oranges腐烂的橘子【Easy】【Python】【BFS】 Problem "LeetCode" In a given grid, each cell can have one of three values: the value represent 阅读全文