Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows. int reverse(int x) { if(x == INT_MIN){//-2147483648 ;…

8. 字符串转换整数 (atoi) 8. String to Integer (atoi) 题目描述 LeetCode LeetCode8. String to Integer (atoi)中等 Java 实现 class Solution { public int myAtoi(String str) { if (str == null || str.trim().length() == 0) { return 0; } str = str.trim(); char firstChar = s…

题目:剑指offer 67题 需要考虑的情况:空指针.nullptr.空字符串"".正负号.数值溢出.在写代码的时候对这些特殊的输入都定义好合理的输出.可以定义一个全局布尔型变量g_nStatus来判断是否是错误输入:可以定义一个minus布尔型变量来存储正负号的结果. , kInvalid }; // enum特性,默认kInvalid = 1 int g_nStatus = kValid; long long StrToIntCore(const char* digit, bool…

String to Integer (atoi) 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 f…

1.  String to Integer (atoi) 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 inte…

我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ 008. String to Integer (atoi) [E] 题目 Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cas…

我现在在做一个叫<leetbook>的开源书项目,把解题思路都同步更新到github上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ 007. Reverse Integer[E]——处理溢出的技巧 题目 Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 思路 这题完全没丝毫的难度,任何人几分钟都可以写…

实现字符串转整形数字 遵循几个规则: 1. 函数首先丢弃尽可能多的空格字符,直到找到第一个非空格字符. 2. 此时取初始加号或减号. 3. 后面跟着尽可能多的数字,并将它们解释为一个数值. 4. 字符串可以在组成整数的字符之后包含其他字符,这些字符将被忽略,并且对该函数的行为没有影响. 5. 如果str中的第一个非空格字符序列不是有效的整数,则为0. Runtime: 16 ms, faster than 62.80% of C++ online submissions for String t…

今天的两道题关于基本数据类型的探讨,估计也是要考虑各种情况,要细致学习 7. Reverse Integer Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 Have you thought about this? Here are some good questions to ask before coding. Bonus points for you if…

8. String to Integer (atoi) 官方的链接:8. String to Integer (atoi) 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 ar…