A palindrome is a string that reads the same forward and backward, for example, radar, toot, and madam. In this lesson we discuss how to approach the palindrome problem using TypeScript / JavaScript. We also discuss a more complex algorithmic challen…
看到这个题目的时候,首先不认识 Determine这个单词.英文不好没办法,查了下是确认的意思,然后不懂 palindrome这个单词, 查了下是回文的意思. 问题是 回文是个什么东西,官方解释: A palindrome is a word, phrase, number, or other sequence of characters which reads the same backward or forward. 回文 尽管英文不好,可是这个英文解释还是看懂了的.意思就是从前读到后面和倒…
[Q7] 把数倒过来 Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input: 123 Output: 321 Example 2: Input: -123 Output: -321 Example 3: Input: 120 Output: 21 Solution: https://leetcode.com/problems/reverse-integer/discuss/229800/Pyt…
Problem H String to Palindrome Input: Standard Input Output: Standard Output Time Limit: 1 Second In this problem you are asked to convert a string into a palindrome with minimum number of operations. The operations are described below: Here you’d ha…
I Love Palindrome String 时间限制: 2 Sec 内存限制: 128 MB 题目描述 You are given a string S=s1s2..s|S| containing only lowercase English letters. For each integer i∈[1,|S|] , please output how many substrings slsl+1...srsatisfy the following conditions: ∙ r−l+1…
Problem Description You are given a string S=s1s2..s|S| containing only lowercase English letters. For each integer i∈[1,|S|] , please output how many substrings slsl+1...sr satisfy the following conditions: ∙ r−l+1 equals to i. ∙ The substring slsl+…
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car" is not a palindrome. Note: Have you consider that…
Determine whether an integer is a palindrome. Do this without extra space. click to show spoilers. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the restriction of using ext…
题目简述: Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car" is not a palindrome. Note: Have you conside…
题目简述: Determine whether an integer is a palindrome. Do this without extra space. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the restriction of using extra space. You coul…
