Return an array of all the palindrome pairs of words. You must write an algorithm with O(sum of words[i].length) runtime complexity. Example 1: Input: words = ["abcd","dcba","lls","s","sssll"] Output: [[0,1],[1,0],[3,2],[2,4]] Explanation: The palindromes are ["abcd...
代码实现 classSolution{Stringsum="";publicStringlongestPalindrome(String s){if(s==null|| s.length() <2)returns;for(inti=0; i < s.length(); i++) { Palindrome(i,i+1,s); Palindrome(i,i,s); }returnsum; }publicvoidPalindrome(intm,intn, String s){if(m<0|| n>=s.length()||s...
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Similar with Binary Tree Max Path Sum, for a given node t, the longest univalue path of this subtree whose root is t, the longest univalue path either includes t or not include t. If not including t, then the answer is either the longest univalue path of t's left subtree or right...