Have you consider that the string might be empty? This is a good question to ask during an interview. For the purpose of this problem, we define empty string as valid palindrome. 1.【基础知识】 回文字符串是一个正读和反读都一样的字符串,比方“level”或者“noon”等等就是回文串。 2.【屌...
Have you consider that the string might be empty? This is a good question to ask during an interview. For the purpose of this problem, we define empty string as valid palindrome. 判断是否是回文字符串。 解题思路: 刚拿到这个题啊,因为之前递归反转栈那道题的影响,我直接就上了递归了。即判断是否...
LeetCode之Palindrome Number(回文数) 1、题目Determine whether an integer is a palindrome. Do this without extra space.2、代码实现代码实现1 public static boolean isPalindrome(int x) { if (x < 0) { return false; } String LeetCode Palindrome Number 回文数 Determine whether an 代码实现 poj3974...
This is a good question to ask during an interview. For the purpose of this problem, we define empty string as valid palindrome. 程序如下: 1classSolution {2public:3boolisPalindrome(strings) {4if(!s.empty() && s.front() =='')5s.erase(0,1);6if(!s.empty() && s.back() =='')...
func validPalindrome(s string) bool { // 定义左指针 l ,初始化为 0 l := 0 // 定义右指针 r ,初始化为 s.length - 1 r := len(s) - 1 // 当还有字符需要比较时,继续处理 for l < r { // 如果 s[l] 和 s[r] 不相等,则需要删除字符 if s[l] != s[r] { // 如果删除 左指...
[LintCode/LeetCode] Longest Palindrome Substring Problem Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. Example...
这里有个关键点,整个串也算是自身的一个子串,纠结半天,觉得至少需要分割一次,即子串长度必须为[1,n-1],想多了。 classSolution{public:constintinf=0x3f3f3f3f;intminCut(string s){intn=s.length();boolisPal[n][n];memset(isPal,false,sizeof(isPal));for(inti=0;i<n;i++){isPal[i][i]=...
class Solution { int seg = 0; public int longestDecomposition(String text) { find(text); //最后一段统一加1 return seg+1; } private void find(String text) { //如果最后刚好为空,全部匹配上,先减1,因为后面会统一加1 if("".equals(text)) { seg--; return; } int l = 0; int r = ...
We’ll Solve Leetcode Problem: 125 Valid Palindrome George Gognadze Tech Tips March 9, 2023 8 min read Tags #AI & ML #Engineering Share To check if any given string is a palindrome or not, we just need to reverse it, and if the reversed string is the same as the original, then ...
For the purpose of this problem, we define empty string as valid palindrome. 思路分析: 将字符串中的非数字字母字符跳过,大写全部转小写,然后从字符串两头向中间逼近,逐一进行比较。 C++参考示例: 代码语言:javascript 复制 classSolution{private:boolisAlphanumeric(char&ch){if(ch>='A'&&ch<='Z'){ch+...