cppcourse/cmat/SolutionEx33/main.cpp

#include "Pixel.h"

#include <algorithm>
#include <iostream>
#include <map>
#include <set>
#include <vector>

void pixelPrint(const Pixel &pixel) { pixel.print(); }

void pixelPtrPrint(const Pixel *pixel) { pixel->print(); }

int main() {
    using namespace std;

    // from Exercise 3.1
    Pixel pixel0;
    cout << "Ex 3.1:" << endl;
    pixel0.print();
    cout << endl;
    Pixel pixel1(1, 2);
    Pixel pixel2(3, 3);
    Pixel pixel3(2, 4);
    Pixel pixel4(5, 2);
    Pixel pixel5(4, 2);
    vector<Pixel> pixelVec;
    pixelVec.push_back(pixel1);
    pixelVec.push_back(pixel2);
    pixelVec.push_back(pixel3);
    pixelVec.push_back(pixel4);
    pixelVec.push_back(pixel5);
    for (unsigned int i = 0; i < pixelVec.size(); ++i) {
        pixelVec[i].print();
    }
    cout << endl;
    for (vector<Pixel>::iterator iter = pixelVec.begin(); iter != pixelVec.end(); ++iter) {
        iter->print();
    }
    cout << endl;
    for (vector<Pixel>::reverse_iterator r_iter = pixelVec.rbegin(); r_iter != pixelVec.rend(); ++r_iter) {
        r_iter->print();
    }
    cout << endl;
    for_each(pixelVec.begin(), pixelVec.end(), pixelPrint);
    cout << endl;
    sort(pixelVec.begin(), pixelVec.end());
    for_each(pixelVec.begin(), pixelVec.end(), pixelPrint);
    cout << endl;

    // from Exercise 3.2
    cout << "Ex 3.2:" << endl;

    vector<Pixel *> pixelPtrVec;
    pixelPtrVec.push_back(&pixel1);
    pixelPtrVec.push_back(&pixel2);
    pixelPtrVec.push_back(&pixel3);
    pixelPtrVec.push_back(&pixel4);
    pixelPtrVec.push_back(&pixel5);

    for_each(pixelPtrVec.begin(), pixelPtrVec.end(), pixelPtrPrint);
    cout << endl;
    PixelPtrCompare pixelPtrComp;
    sort(pixelPtrVec.begin(), pixelPtrVec.end(), pixelPtrComp);
    for_each(pixelPtrVec.begin(), pixelPtrVec.end(), pixelPtrPrint);
    cout << endl;
    pixelPtrComp.setSortOnY(true);
    sort(pixelPtrVec.begin(), pixelPtrVec.end(), pixelPtrComp);
    for_each(pixelPtrVec.begin(), pixelPtrVec.end(), pixelPtrPrint);
    cout << endl;

    cout << endl;

    // Ex 3.3
    cout << "3.3 Part 1:" << endl;

    set<Pixel> pixelSet;

    pixelSet.insert(Pixel(1, 7));
    pixelSet.insert(Pixel(3, 7));
    pixelSet.insert(Pixel(2, 7));
    cout << "There are " << pixelSet.size() << " elements in pixelSet" << endl;
    for_each(pixelSet.begin(), pixelSet.end(), &pixelPrint);
    cout << endl;

    pixelSet.insert(Pixel(1, 7));
    cout << "There are " << pixelSet.size() << " elements in pixelSet" << endl;

    multiset<Pixel> pixelMultiset;
    pixelMultiset.insert(Pixel(1));
    pixelMultiset.insert(Pixel(3));
    pixelMultiset.insert(Pixel(2));
    cout << "There are " << pixelMultiset.size() << " elements in pixelMultiset" << endl;
    for_each(pixelMultiset.begin(), pixelMultiset.end(), &pixelPrint);
    cout << endl;

    pixelMultiset.insert(Pixel(1));
    cout << "There are " << pixelMultiset.size() << " elements in pixelMultiset" << endl;

    cout << "3.3 Part 2:" << endl;
    typedef map<int, Pixel> IPixelMap;
    IPixelMap pixelMap;
    pixelMap.insert(std::make_pair(1, Pixel(1)));
    pixelMap.insert(std::make_pair(2, Pixel(2)));
    pixelMap.insert(std::make_pair(2, Pixel(3)));

    cout << "There are " << pixelMap.size() << " elements in pixelMap" << endl;

    IPixelMap::iterator found_it = pixelMap.find(1);
    if (found_it != pixelMap.end()) {
        cout << "found ";
        found_it->second.print();
        cout << endl;
    } else {
        cout << "not found" << endl;
    }

    found_it = pixelMap.find(4);
    if (found_it != pixelMap.end()) {
        cout << "found ";
        found_it->second.print();
        cout << endl;
    } else {
        cout << "not found" << endl;
    }

    cout << "pixelMap[1] ";
    pixelMap[1].print();
    cout << endl;
    cout << "pixelMap[4] ";
    pixelMap[4].print();
    cout << endl << endl;

    typedef multimap<int, Pixel> IPixelMultiMap;
    IPixelMultiMap pixelMultimap;

    pixelMultimap.insert(std::make_pair(1, Pixel(1)));
    pixelMultimap.insert(std::make_pair(2, Pixel(2)));
    pixelMultimap.insert(std::make_pair(2, Pixel(3)));

    cout << "There are " << pixelMultimap.size() << " elements in pixelMultimap" << endl;

    cout << endl;

    return 0;
}