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Congestion Avoidance in TCP Consequence of lack of congestion control When a popular resource is shared without regulation the result is always ove... 阅读全文
posted @ 2014-10-27 00:24
Ryan in C++
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Studying TCP's Throughput and Goodput using NS What is Throughput Throughput is the amount of data received by the destination.The Average Throughput ... 阅读全文
posted @ 2014-10-26 23:50
Ryan in C++
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Studying TCP's Congestion Window using NS How to obtain TCP's CWND value The most important value that determine the behavior of TCP is the congestion... 阅读全文
posted @ 2014-10-26 23:12
Ryan in C++
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NS Simulation: Scheduling Events Simulation time A similation system (such as NS) must have a built-in simulation clock - it represents the "clock" ... 阅读全文
posted @ 2014-10-26 23:10
Ryan in C++
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这个网站上的一系列讲解NS2的内容真的是深入浅出，看完立刻豁然开朗。所以就接连转了几篇。Scheduling Events那篇里的例子特别好，看完就懂了。http://www.mathcs.emory.edu/~cheung/Courses/558-old/Syllabus/90-NS/NS Sim... 阅读全文
posted @ 2014-10-26 23:07
Ryan in C++
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http://blog.csdn.net/kenden23/article/details/18696083本题是十分麻烦的题目，情况是非常多，网上也很多方法，其中最有效，优雅的方法是有限状态自动机(Finite automata machine)。其他一般方法都会十分复杂，而代码不能算优雅。为此我... 阅读全文
posted @ 2014-10-26 10:55
Ryan in C++
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Solution: when see question about two strings , DP should be considered first.We can abstract this question to calculate appear times for string T wit... 阅读全文
posted @ 2014-10-25 23:49
Ryan in C++
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属于中规中矩的dp。和unique paths类似。一次ac。但是可以通过滚动数组来节省存储空间。 1 #include 2 #include 3 #include 4 using namespace std; 5 6 class Solution { 7 public: 8 int... 阅读全文
posted @ 2014-10-25 20:43
Ryan in C++
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一维DP。 1 class Solution { 2 //Best time to buy and sell stock III 3 //correct one 4 public: 5 int maxProfit(vector &prices) { 6 if ... 阅读全文
posted @ 2014-10-23 09:32
Ryan in C++
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Greedy 1 class Solution 3 public: 4 int jump(int A[], int n) { 5 int start = 0; 6 int end = 0; 7 int count = 0; 8 ... 阅读全文
posted @ 2014-10-22 21:18
Ryan in C++
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