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[Leetcode][python]Valid Palindrome/验证回文串 题目大意 判断一个字符串是否是回文字符串,只考虑字母和数字,并且忽略大小写。 注意点: 空字符串在这里也定义为回文串 解题思路 去掉除了数字和字母之外的字符isalnum() 都改为小写 将数组(字符串)反过来,判断是否相等 代码 class Solution(object): def isPalindrome...
## LeetCode 9, 回文数,简单写法1:classSolution:defisPalindrome(self,x:int)->bool:y=str(x)## 转换为字符串z=y[::-1]## 对字符串进行反转returny==z 解法2. 简单写法的精简版 转换和反转的操作,都可以放入return语句。 ## LeetCode 9, 回文数,简单写法1的精简版classSolution:defisPalindrome(sel...
1classSolution(object):2defisPalindrome(self, x):3"""4:type x: int5:rtype: bool6"""7x2 = str(x)8ifx2 == x2[::-1]:9returnTrue10else:11returnFalse 一个比较精简的代码 运行时间打败了97%的代码 但是很占内存
to test### YOUR CODE HERE. DO NOT DELETE THIS LINE OR ADD A word DEFINITION BELOW IT.###自己的代码is_palindrome = word.find(word[::-1])# TESTINGprintis_palindrome# >>> 0 # outcome if word == "madam",a palindrome# >>> -1 # outcome if word == "madman",not a palindrome...
分享50个最有价值的图表【python实现代码】。 目录 准备工作分享51个常用图表在Python中的实现,按使用场景分7大类图,目录如下:一、关联(Correlation)关系图 1、散点图(Scatter plot) 2、边界气泡图(Bubble plot with Encircling) 3、散点图添加趋势线(Scatter plot with linear regression line of best fit) 4、...
# @return {boolean} Whether the string is a valid palindrome def isPalindrome(self, s): if not s: return True l, r = 0, len(s) - 1 while l < r: # find left alphanumeric character if not s[l].isalnum(): l += 1 continue ...
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Here is source code of the Python Program to check whether a string is a palindrome or not using recursion. The program output is also shown below. defis_palindrome(s):iflen(s)<1:returnTrueelse:ifs[0]==s[-1]:returnis_palindrome(s[1:-1])else:returnFalsea=str(input("Enter string:...