2017-09-08 LeetCode_008 String to Integer (atoi)
来源:互联网 发布:淘宝类目选错会怎么样 编辑:程序博客网 时间:2024/06/06 16:38
8. 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 for this problem to be specified vaguely (ie, no given input specs). You are responsible to gather all the input requirements up front.
Update (2015-02-10):
The signature of the C++
function had been updated. If you still see your function signature accepts a const char *
argument, please click the reload button to reset your code definition.
spoilers alert... click to show requirements for atoi.
The function first discards as many whitespace characters as necessary until the first non-whitespace character is found. Then, starting from this character, takes an optional initial plus or minus sign followed by as many numerical digits as possible, and interprets them as a numerical value.
The string can contain additional characters after those that form the integral number, which are ignored and have no effect on the behavior of this function.
If the first sequence of non-whitespace characters in str is not a valid integral number, or if no such sequence exists because either str is empty or it contains only whitespace characters, no conversion is performed.
If no valid conversion could be performed, a zero value is returned. If the correct value is out of the range of representable values, INT_MAX (2147483647) or INT_MIN (-2147483648) is returned.
Solution:
- 2017-09-08 LeetCode_008 String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- string to integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer(atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- String to Integer (atoi)
- javascript事件流
- centos 6.x 上 安装tensorflow 1.3 的一些问题总结
- ConcurrentHashMap的锁分段技术
- Tesseract-OCR 字符识别---样本训练
- 101. Symmetric Tree
- 2017-09-08 LeetCode_008 String to Integer (atoi)
- PS_BaseUse_白底照片
- Lisp发展史(简要)
- 度娘所阐述的企业信息化概念和这个行业的未来
- 2、js基础:垃圾收集
- springmvc提交表单日期用Date接收
- Windows快速批量删除大量文件的命令
- 用java写顺序表
- 对于Verilog语言的一些总结