...构找出Top K,时间复杂度为N O(logK)最终时间复杂度为O(N) + NO(logK)第二种解法:题目中有提到字符串的特点,可以用字典树(trie):特点是排序和保存大量的字符串,利用公共前缀来减少查询,也就是说关键字域存该字符串的出现次数,没有出现为0,最后10个元素...
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试着记住trie 术语trie(单词查找树)来源于单词retrieval(检索)的中间部分。它本来被人们读作tree,好在现在常见读法已经将其读为发音有区别的try了。
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Trie Tree 字典树 ; trie树
binary trie 二叉线索
quad trie 四元线索
trie树 trie tree
Trie-tree Trie树
Double-array Trie 双数组Trie
For example, if the word "dog" were stored in a trie as a node, it would descend from the node containing "do," which would descend from the node containing "d."
例如,如果单词“dog”被存储为trie中的一个节点,它将是包含“do”的节点的后代,而后者又是包含“d”的节点的后代。
A trie (the name comes from the word retrieval) is made up of a series of nodes where the descendants of a given node have the same prefix of the string associated with that node.
trie(此名源于单词retrieval)由一系列的节点组成,其中,一个给定节点的后代具有与该节点关联的相同的字符串前缀。
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