LeetCode知识点总结

LeetCode知识点总结 - 524

news2026/3/30 1:38:16

LeetCode 524. Longest Word in Dictionary through Deleting考点难度ArrayMedium题目Given a string s and a string array dictionary, return the longest string in the dictionary that can be formed by deleting some of the given string characters. If there is more than one possible result, return the longest word with the smallest lexicographical order. If there is no possible result, return the empty string.思路Check every word dictWord in the dictionary:Check 1: dictWord is a subsequence of sCheck 2: only consider words that are LONGER or SAME LENGTH as current longestTwo cases to update answer:1… New word is LONGER than old longest, OR2. Same length BUT lex order is SMALLER (e.g., “apple” “apply”)答案classSolution{publicintfib(intN){if(N1)returnN;inta0,b1;while(N--1){intsumab;ab;bsum;}returnb;}}

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