How to Solve Prefix and Suffix Search Problem
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Prefix and Suffix Search
Design a special dictionary that searches the words in it by a prefix and a suffix. Implement the WordFilter class: WordFilter(string[] words) Initializes the object with the words in the dictionary. ...
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Understanding the Prefix and Suffix Search Problem
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Problem Statement
Design a special dictionary that searches the words in it by a prefix and a suffix. Implement the WordFilter class: WordFilter(string[] words) Initializes the object with the words in the dictionary. f(string pref, string suff) Returns the index of the word in the dictionary, which has the prefix pref and the suffix suff. If there is more than one valid index, return the largest of them. If there is no such word in the dictionary, return -1.
Prefix and Suffix Search
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Examples
Example input
Example output
Constraints
1 <= words.length <= 104
1 <= words[i].length <= 7
1 <= pref.length, suff.length <= 7
words[i], pref and suff consist of lowercase English letters only.
At most 104 calls will be made to the function f.
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