Description
Determine whether an integer is a palindrome. Do this without extra space.
在不使用额外空间的条件下判断一个整型是否为回文
Description
Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the > possible input cases. Notes: It is intended for this problem to be specified vaguely (ie, no given input specs). You are responsible to gather all the > input requirements up front.
实现atoi功能
Description
Reverse digits of an integer.
Example1: x = 123, return 321Example2: x = -123, return -321The input is assumed to be a 32-bit signed integer. Your function should return 0 when the reversed integer overflows.
将输入的十进制数倒序输出
Description
You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list.
You may assume the two numbers do not contain any leading zero, except the number 0 itself.
Input: (2 -> 4 -> 3) + (5 -> 6 -> 4)
Output: 7 -> 0 -> 8
给定两个非空链表表示的非负整数。实现加法，向后进位。
