2.9 KiB
TinySTL
采用C++11实现一款简易的STL标准库
目的:练习数据结构与算法和C++ Template编程
编译环境:VS2013及以上版本
##开发计划:
- STL的几大基本组件,如string、vector、list、deque、set、map、unordered_*等
- STL算法库中的大部分算法
- circular buffer
- bitmap
- skip list
- binary search tree
- AVL tree
- 线段树
- splay tree
- rope
- Van Emde Boas tree
- treap
- B-tree
- trie
- suffix array/tree
- Disjoint-set data structure
- k-d tree
- R-tree
- Graph
##完成进度:
- STL的几大基本组件
- type traits:100%
- 空间配置器:100%
- iterator traits:100%
- reverse_iterator:100%
- vector:100%
- STL Algorithms:
- fill:100%
- fill_n:100%
- circular_buffer:90%
- bitmap:90%
#TinySTL测试: ###测试环境:Windows 7 && VS2013 && release模式 ###测试结果: ####(1)
//std::vector<int> vec;
TinySTL::vector<int> vec;
ProfilerInstance::start();
int i = 0;
for (; i != 10000; ++i){
vec.push_back(i);
}
ProfilerInstance::finish();
ProfilerInstance::dumpDuringTime();
######i = 100000 -> (TinySTL::vector:2ms \ std::vector:6ms)
######i = 1000000 -> (TinySTL::vector:11ms \ std::vector:16ms)
######i = 10000000 -> (TinySTL::vector:129ms \ std::vector:210ms)
//std::vectorstd::string vec;
TinySTL::vectorstd::string vec;
ProfilerInstance::start();
int i = 0;
for (; i != 10000; ++i){
vec.push_back(std::string("zouxiaohang"));
}
ProfilerInstance::finish();
ProfilerInstance::dumpDuringTime();
######i = 100000 -> (TinySTL::vector:18ms \ std::vector:29ms) ######i = 1000000 -> (TinySTL::vector:181ms \ std::vector:232ms) ######i = 10000000 -> (TinySTL::vector:2372ms \ std::vector:1972ms) TinySTL::circular_buffer<int, 10000> cb(10000, 0); //boost::circular_buffer cb(10000, 0); ProfilerInstance::start(); for (int i = 0; i != 10000000; ++i){ cb.push_back(i); } ProfilerInstance::finish(); ProfilerInstance::dumpDuringTime();
######i = 10000000 -> (TinySTL::circular_buffer:75ms \ boost::circular_buffer:22ms)
######i = 100000000 -> (TinySTL::circular_buffer:604ms \ boost::circular_buffer:252ms)
######i = 1000000000 -> (TinySTL::circular_buffer:5936ms \ boost::circular_buffer:2241ms)
std::string str("abcdefghijklmnpqrstuvwxyz");
TinySTL::bitmap<26> bm;
for (auto it = str.cbegin(); it != str.cend(); ++it){
bm.set(*it - 'a');
}
cout << bm << endl;
cout << bm.size() << endl;
for (int i = 0; i != 26; ++i){
if (!bm.test(i))
cout << "字母" << (char)('a' + i) << "没出现!!!" << endl;
}
题目:利用bitmap找出str中未出现的字母
输出结果:
111111111111110111111111111000000
32
字母o没出现!!!