Evaluate the value of an arithmetic expression in Reverse Polish Notation.Valid operators are +, -, *, /. Each operand may be an integer or another ex...
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其他好文 时间：
2014-10-14 09:49:07
阅读次数：
219
#include
#include
using namespace std;
string str;
void reverse(int begin,int end)
{
while(begin<end)
{
str[begin] = str[begin]^str[end];
str[end] = str[begin]^str[end];...
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其他好文 时间：
2014-10-14 00:25:57
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207
Known Notation
Time Limit: 2 Seconds Memory Limit: 65536 KB
Do you know reverse Polish notation (RPN)? It is a known notation in the area of mathematics and computer science. It is also k...
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其他好文 时间：
2014-10-13 21:59:07
阅读次数：
292
Evaluate the value of an arithmetic expression in Reverse Polish Notation.
Valid operators are +, -, *, /.
Each operand may be an integer or another expression.
Some examples:
["2", "1",...
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编程语言 时间：
2014-10-13 20:33:47
阅读次数：
231
前面主要介绍的是：V4L2 的一些设置接口，如亮度，饱和度，曝光时间，帧数，增益，白平衡等。今天看看V4L2 得到数据的几个关键ioctl，Buffer的申请和数据的抓取。
1. 初始化 Memory Mapping 或 User Pointer I/O.
int ioctl(int fd, int requestbuf, struct v4l2_requestbuffers * argp...
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系统相关 时间：
2014-10-13 16:23:59
阅读次数：
279
Given an input string, reverse the string word by word.
For example,
Given s = "the sky is blue",
return "blue is sky the".
click to show clarification.
Clarification:
What constitutes...
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编程语言 时间：
2014-10-13 14:44:09
阅读次数：
190
Known Notation
Time Limit: 2 Seconds Memory Limit: 131072 KB
Do you know reverse Polish notation (RPN)? It is a known notation in the area of mathematics and computer science. It is also kn...
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其他好文 时间：
2014-10-13 12:54:49
阅读次数：
152
Do you know reverse Polish notation (RPN)? It is a known notation in the area of mathematics and computer science. It is also known as postfix notation since every operator in an expression
follows ...
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其他好文 时间：
2014-10-12 22:58:58
阅读次数：
263
Problem：Reverse digits of an integer.Example1:x = 123, return 321Example2:x = -123, return -321终于什么都没参考就一次Accept了。可能是这题比较简单，同时自己也进步了一点点，leetcode就是这样给我...
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其他好文 时间：
2014-10-12 22:55:28
阅读次数：
151
题目链接：
Known Notation
Time Limit: 2 Seconds Memory Limit: 65536 KB
Do you know reverse Polish notation (RPN)? It is a known notation in the area of mathematics and computer science. It...
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其他好文 时间：
2014-10-12 22:26:48
阅读次数：
250
