解法1:字符串反转 ## 解法一:转换为字符串,要考虑溢出 ## 特殊的案例:< 2**31-1 class Solution: def reverse(self, x: int) -> int: if x>=0: ans = int(str(x)[::-1]) else: ans = -int( str(abs(x))[::-1] ) ## 不用用 -x? ## 考虑溢出 return ans
个人觉得,第二种方法是最容易想到的,因为List中的reverse方法比较常用,做LeetCode题目7. Reverse Integer也用了这种方法,程序耗时65ms #字符串的反转#用到for循环的步长参数,从大到小循环,到0为止defreverse1 (s): rt=''foriinrange(len(s)-1, -1, -1): rt+=s[i]returnrt#用到list的反转函数reverse...
Reverse digits of an integer. Example1: x = 123,return321 Example2: x = -123,return-321 Note: The input is assumed to be a 32-bit signed integer. Your function should return 0 when the reversed integer overflows. 这道题要求输入123返回321 输入-123返回-321 考虑32位有符号整型,溢出返回0...
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The most simple way to reverse a number in Python is to convert it to a string, reverse the string, and convert it back to an integer: def reverse_number_string_method(number): """ Reverse a number using string conversion. Args: ...
The input is assumed to be a 32-bit signed integer. Your function should return 0 when the reversed integer overflo...[LeetCode] 7. Reverse Integer* 原题链接: https://leetcode.com/problems/reverse-integer/ 1. 题目介绍 Given a 32-bit signed integer, reverse digits of an integer. Note...
[Leetcode][python]Reverse Integer/反转整数 题目大意 反转整数123变为321,-123变为-321 注意:在32位整数范围内,并且001要成为1 假设我们的环境只能存储 32 位有符号整数,其数值范围是 [−2^31, 2^31 − 1]。根据这个假设,如果反转后的整数溢出,则返回 0。
并调用内置函数reverse,并且转为int时它会自己主动处理首位带的零。很easy。可是我的程序没有处理是否越界的问题。可是依旧AC class Solution: # @return an integer def reverse(self, x): if x<0: sign = -1 else: sign = 1 strx=str(abs(x)) r = strx[::-1] return sign*int(r)...
# Python program to define an# integer value and print it# declare and assign an integer valuenum=10# print numprint"num =",num# print using formatprint"num = {0}".format(num)# assign another valuenum=100# print numprint"num =",num# print using formatprint"num = {0}".format(num...
Write a Python program to reverse a string. Sample String:"1234abcd" Expected Output:"dcba4321" Sample Solution-1: Python Code: # Define a function named 'string_reverse' that takes a string 'str1' as inputdefstring_reverse(str1):# Initialize an empty string 'rstr1' to store the reve...