#include #include #include #include #include #include using namespace std; std::vector > summarize(std::vector v){ int summaryRows = 0; bool found = false; std::vector > summary; if(!v.empty()){ std::vector tempRow; for(int i = 0; i < v.size();i++){ int j = 0; while(!found && j < summaryRows){ if(v[i] == summary[j][0]){ found = true; } else { j++; } } if(found){ summary[j][1]++; } else { tempRow.push_back(v[i]); tempRow.push_back(1); summary.push_back(tempRow); tempRow.clear(); summaryRows++; } found = false; } } return summary; } void print(std::vector > vecIn){ cout << " ## freq" << endl; for(int i = 0; i < vecIn.size(); i++){ for(int j = 0; j < 2; j++){ cout << setw(5) << vecIn[i][j]; } cout << endl; } cout << "---------------" << endl << endl; } int main() { srand(time(NULL)); int a; int n = 10; std::vector myVec; for(int i = 0; i < 50; i++){ a = rand()%n + 1; //random number between 1-n myVec.push_back(a); } std::vector > frequencyVector = summarize(myVec); print(frequencyVector); std::sort(myVec.begin(),myVec.end()); std::vector > sortedFreqVec = summarize(myVec); print(sortedFreqVec); return 0; }

cpp_2DVectorsSummaryFunction