}elseif(in >='0'&& in <='9') returntrue; returnfalse; } boolisPalindrome(string s) { intl = 0, h = s.size()-1; boolans =true; while(l < h) { charcl, cr; cl = s[l]; while(!isAlpha(cl) && l < h) { l++; ...
Valid Palindrome·有效回文 秦她的菜 吉利 程序员题目描述 英文版描述 A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forward and backward. Alphanumeric characters include letters and ...
"A man, a plan, a canal: Panama"is a palindrome. "race a car"isnota palindrome. 空串是回文串。 分析:首尾開始比較。不是字母的跳过,都是字母且同样继续比較,否则就是返回false。 bool alphanumeric (char c) { return (c >= 'a' && c <= 'z' || c >= '0' && c <= '9'); } vo...
For example, “A man, a plan, a canal: Panama” is a palindrome. “race a car” is not a palindrome. Note: 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 palin...
原题链接 :https://leetcode.com/problems/valid-palindrome/ Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. 给定一个字符串判断是否是回文的,只考虑字母表和数字,忽略大小写。 Note:For the purpose of this problem, we define empty string ...
1.7 Valid Sudoku 1.8 Trapping Rain Water 1.9 Swap Nodes in Pairs 1.10 Reverse Nodes in k-Group 2. 字符串 2.1 Valid Palindrome 2.2 Implement strStr() 3.3 String to Integer (atoi) 3.4 Add Binary 3.5 Longest Palindromic Substring 3.6 Regular Expression Matching 3.7 Wildcard Matching 3.8 Longest ...
【LeetCode】- Valid Palindrome(右回文) [ 问题:] Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. 直译:给你一个字符串, 判定它是否是回文(仅仅统计字母、数字。其它字符请忽略)。
For the purpose of this problem, we define empty string as valid palindrome. Solution 代码语言:javascript 复制 classSolution{public:boolisPalindrome(string s){string res="";for(auto it:s){if((it>='a'&&it<='z')||(it>='0'&&it<='9'))res+=it;elseif(it>='A'&&it<='Z')res+=...
/* * @lc app=leetcode id=125 lang=javascript * * [125] Valid Palindrome */// 只处理英文字符（题目忽略大小写，我们前面全部转化成了小写， 因此这里我们只判断小写）和数字function isValid(c) { const charCode = c.charCodeAt(0); const isDigit = charCode >= "0".charCodeAt(0) && ...
421 Maximum XOR of Two Numbers in an Array 456 132 Pattern 458 Poor Pigs 472 Concatenated Words 479 Largest Palindrome Product 502 IPO 516 Longest Palindromic Subsequence == LCS 517 Super Washing Machines 523 Continuous Subarray Sum 542 01 Matrix 546 Remove Boxes 591 Tag Validator 632 Smallest ...