说到回文数,大家可能会比较的陌生,但是在我们的日常生活中常会遇到这样的数字,只是你不知道它是回文数罢了. 例如:12321,这组数字就是回文数. 设n是一任意自然数.若将n的各位数字反向排列所得自然数n1与n相等,则称n为一回文数,这是大百度为我们的解释. 如果想更深入的了解,可以自行查找资料加深学习. 方法一: num = input("输入一个数") if num.isdigit(): num = str(num) for i in range(len(num)//2): if n
Palindromes A regular palindrome is a string of numbers or letters that is the same forward as backward. For example, the string "ABCDEDCBA" is a palindrome because it is the same when the string is read from left to right as when the string
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1431 Problem Description xiaoou33对既是素数又是回文的数特别感兴趣.比如说151既是素数又是个回文.现在xiaoou333想要你帮助他找出某个范围内的素数回文数,请你写个程序找出 a 跟b 之间满足条件的数.(5 <= a < b <= 100,000,000); Input 这里有许多组数据,每组包括两组数据a跟b. Output 对每一组数据,按从小到大输出
回文 palindrome Python 字符串反转string[::-1] Slice notation "[a : b : c]" means "count in increments of c starting at a inclusive, up to b exclusive". If c is negative you count backwards, if omitted it is 1. If a is omitted then you start a