Leetcode c语言-Longest Common Prefix Title: Write a function to find the longest common prefix string amongst an array of strings. 这道题目不难,唯一要注意的是二重指针的使用,因为给了一个字符串数组,也就是一个二维数组,strs[][],对于第一个字符串,应该是strs[0],对于第一个字符串中的第一个...
package LeetCode_1392 /** * 1392. Longest Happy Prefix * https://leetcode.com/problems/longest-happy-prefix/ * * A string is called a happy prefix if is a non-empty prefix which is also a suffix (excluding itself). Given a string s. Return the longest happy prefix of s . Return ...
Example 2: Input: s = "ababab" Output: "abab" Explanation: "abab" is the largest prefix which is also suffix. They can overlap in the original string. Example 3: Input: s = "leetcodeleet" Output: "leet" Example 4: Input: s = "a" Output: "" Constraints: 1 <= s.length <= ...
1classSolution {2func longestDupSubstring(_ S: String) ->String {3varsa:[Int] = suffixArray(Array(S),26)4let n:Int =S.count5varlcp:[Int] =buildLCP(Array(S), sa)6varisa:[Int] = [Int](repeating:0,count:n)7foriin0..<n {isa[sa[i]] =i}8varmax:Int =09vararg:Int = -110...
The idea is to get the longest palindrome prefix, and then reverse the rest of the string and add it to the front. O(n2) complexity. classSolution {publicString shortestPalindrome(String s) {if(s.length() <= 1)returns;intend =s.length();for(; end >= 1; --end)if(isPalindrome(s...