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| #include <vector> | |
| #include <algorithm> | |
| #include <iterator> | |
| #include <iostream> | |
| #include <sys/time.h> | |
| void event(std::vector<char> &v, std::vector<unsigned long long> &sp, std::vector<unsigned long long> &ep) | |
| { | |
| char pre_val(0), cur_val(0); | |
| unsigned long long pos(0); | |
| for (std::vector<char>::iterator i = v.begin(); i != v.end(); ++i) | |
| { | |
| cur_val = *i; | |
| if ((cur_val != pre_val) && (cur_val)) | |
| { | |
| pos = std::distance(v.begin(), i); | |
| sp.push_back(pos); | |
| if (pre_val) ep.push_back(pos); | |
| pre_val = cur_val; | |
| } | |
| } | |
| ep.push_back(std::distance(v.begin(), v.end() - 1)); | |
| } | |
| void period(std::vector<char> &v, std::vector<unsigned long long> &sp, std::vector<unsigned long long> &ep) | |
| { | |
| char pre_val(0), cur_val(0); | |
| unsigned long long pos(0); | |
| for (std::vector<char>::iterator i = v.begin(); i != v.end(); ++i) | |
| { | |
| cur_val = *i; | |
| if (cur_val != pre_val) | |
| { | |
| pos = std::distance(v.begin(), i); | |
| if (cur_val) sp.push_back(pos); | |
| if (pre_val) ep.push_back(pos); | |
| pre_val = cur_val; | |
| } | |
| } | |
| if (cur_val) ep.push_back(std::distance(v.begin(), v.end() - 1)); | |
| } | |
| int main() | |
| { | |
| std::vector<char> v; | |
| std::vector<unsigned long long> sp, ep; | |
| timeval t1, t2; | |
| double elapsedTime; | |
| // Creation of events vector like [0 0 0 1 0 0 -1 0 0 -1 -1 1 0 0 0 1 0 0 1 -1 0 0 1] | |
| v.push_back(0); v.push_back(0); | |
| v.push_back(0); v.push_back(1); | |
| v.push_back(0); v.push_back(0); | |
| v.push_back(-1); v.push_back(0); | |
| v.push_back(0); | |
| v.push_back(-1); v.push_back(-1); | |
| v.push_back(1); v.push_back(0); | |
| v.push_back(0); v.push_back(0); | |
| v.push_back(1); v.push_back(0); | |
| v.push_back(0); v.push_back(1); | |
| v.push_back(-1); v.push_back(0); | |
| v.push_back(0); v.push_back(1); | |
| std::cout << "Input vector:\n"; | |
| std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " ")); | |
| std::cout << "\n"; | |
| // start timer | |
| gettimeofday(&t1, NULL); | |
| event(v, sp, ep); | |
| // stop timer | |
| gettimeofday(&t2, NULL); | |
| // compute and print the elapsed time in millisec | |
| elapsedTime = (t2.tv_sec - t1.tv_sec) * 1000.0; // sec to ms | |
| elapsedTime += (t2.tv_usec - t1.tv_usec) / 1000.0; // us to ms | |
| std::cout << "Event => sp: "; | |
| std::copy(sp.begin(), sp.end(), std::ostream_iterator<int>(std::cout, " ")); | |
| std::cout << "\n"; | |
| std::cout << "Event => ep: "; | |
| std::copy(ep.begin(), ep.end(), std::ostream_iterator<int>(std::cout, " ")); | |
| std::cout << "\n"; | |
| std::cout << "Event => elapsed time " << elapsedTime << " ms \n"; | |
| std::vector<unsigned long long>().swap(sp); | |
| std::vector<unsigned long long>().swap(ep); | |
| // start timer | |
| gettimeofday(&t1, NULL); | |
| period(v, sp, ep); | |
| // stop timer | |
| gettimeofday(&t2, NULL); | |
| // compute and print the elapsed time in millisec | |
| elapsedTime = (t2.tv_sec - t1.tv_sec) * 1000.0; // sec to ms | |
| elapsedTime += (t2.tv_usec - t1.tv_usec) / 1000.0; // us to ms | |
| std::cout << "Period => sp: "; | |
| std::copy(sp.begin(), sp.end(), std::ostream_iterator<int>(std::cout, " ")); | |
| std::cout << "\n"; | |
| std::cout << "Period => ep: "; | |
| std::copy(ep.begin(), ep.end(), std::ostream_iterator<int>(std::cout, " ")); | |
| std::cout << "\n"; | |
| std::cout << "Period => elapsed time " << elapsedTime << " ms \n"; | |
| return 0; | |
| } |
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