/* Write a program which will take a series of numbers and then produce a statistical report based on the given data. The report should include the mean, mode and median. Also draw the histogram for the given data. For example: Input: 2 5 2 3 4 5 1 5 3 3 4 Mean: 3.36 Mode: 3 5 Median: 3 Histogram: 1|* 2|** 3|*** 4|** 5|*** */ #include #include #include #include #include using namespace std; template void outVector(vector v) { for(T e:v) { cout << e << ' '; } cout << endl; } template class Statistics { typedef unsigned int count_t; private: vector data; size_t size() { return data.size(); } map elem_count() { map count; for(DataType elem:data) { count[elem]++; } return count; } public: Statistics(vector _data) { sort(_data.begin(),_data.end()); data=_data; } ~Statistics() { } double mean() { DataType sum=0; for (DataType d:data) { sum+=d; } return (double)sum/size(); } vector mode() { vector mode; count_t most_common=0; for (auto it:elem_count()) { if(most_common<=it.second) { if(most_common!=it.second) { most_common=it.second; mode.clear(); } mode.push_back(it.first); } } return mode; } double median() { DataType left_median=data[size()/2-1], right_median=data[size()/2]; if (size()%2==0) { return (double)(left_median+right_median)/2; } return right_median; } string histogram() { string histogram=""; count_t sp_count = to_string(data[size()-1]).size(); for (auto a:elem_count()) { string s=to_string(a.first); histogram+=s; for(count_t i=0;i data; int elem; while(cin>>elem) { data.push_back(elem); } Statistics stat(data); outVector(data); cout << "-> Mean: " << stat.mean() << endl << "-> Mode: "; outVector(stat.mode()); cout << "-> Median: " << stat.median() << endl << "-> Histogram:\n" << stat.histogram(); return 0; }

Histogram challenge