int main()
{
int length;
int *array;
cout << "Enter the length of the array" << endl;
cin >> length;
array = new int[length];
cout << "Enter the values of the array" << endl;
for(int i = 0; i< length ; i++)
{
cin >> array[i];
}
Sorting objSort;
//Selection Sort
// objSort.selectionSort(array, length);
//Bubble Sort
// objSort.bubbleSort(array, length);
//Insertion Sort
//objSort.insertionSort(array, length);
//QuickSort
//objSort.quickSort(array,0,length-1);
//ShellSort
// objSort.shellSort(array, length);
//MergeSort
objSort.mergeSort(array, 0, length-1);
delete[] array;
return 0;
}
/*
* This function prints the Averages from the tests after running through all the tests.
*
* int max_size = maximum size that we want to test each sorting algorithm to
* int min_size = minimum size that we want to test each sorting algorithm to
* string theSort = string that contains tha name of the sorting algorithm we are testing.
*
* Worst-Case Time Complexity: Θ(n^2 + n^2 + n^2 + n^2) = Θ(n^2)
*/
void testing(int min_size, int max_size, string algorithm){
// making sure I know what the size of each tests I'm doing
const int& tests = 5;
const int& test_size = 10;
// making sure each size of the array is a set value
const int& array_size = 10;
// average cpu_time arrays for each data set
float* increasing_array_averages = new float[array_size];
float* decreasing_array_averages = new float[array_size];
float* random_array_averages = new float[array_size];
float* constant_array_averages = new float[array_size];
std::cout << "\nIncreasing Array using " << algorithm << std::endl;
// run 10 size instances (10000, 20000, 30000, etc.)
for (int i = 0; i < test_size; i++){
std::cout << max_size << " instances." << std::endl;
// instantiate average value and sum value to zero on every new test.
float average = 0.0;
float sum = 0.0;
// create new cpu_times array on every new test.
float* cpu_times = new float[5];
// run five tests
for (int j = min_size; j < tests; j++){
// set time to 0 before running the cpu times
float time = 0.0;
// instantiate new array for increasing ordered array.
int* increasingArray = ag.generateIncreasingArray(max_size);
if (algorithm == "insertionSort"){
clock_t c_start = clock();
s.insertionSort(increasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "bubbleSort"){
clock_t c_start = clock();
s.bubbleSort(increasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "quickSort"){
clock_t c_start = clock();
s.quickSort(increasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "mergeSort"){
clock_t c_start = clock();
s.mergeSort(increasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else {
clock_t c_start = clock();
s.selectionSort(increasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
//std::cout << "CPU Time (IncreasingArray): " << fixed << setprecision(3) << time << " ms." << std::endl;
std::cout << fixed << setprecision(3) << time << " ms" << std::endl;
// add cpu time to cpu_times array
cpu_times[j] = time;
// delete array at the end of each run to avoid memory leaks and faulty data
delete[] increasingArray;
}
// add up the cpu_times values
for (int j = 0; j < 5; j++){
sum += cpu_times[j];
}
// find average value
average = sum / 5.0;
//std::cout << "Average time (" << max_size << " instances): " << average << "ms.\n" << std::endl;
std::cout << fixed << setprecision(3) << average << " ms\n" << std::endl;
// add average value to increasing_array_averages array per number of runs
increasing_array_averages[i] = average;
// once we pass our last instance (100000) break.
if (max_size == 100000){
break;
}
// go to the next instance (10000 to 20000)
max_size += 10000;
// delete cpu_times array to avoid memory leaks or faulty data
delete[] cpu_times;
}
// start max_size back at 10000
max_size = 10000;
std::cout << "\nDecreasing Array using " << algorithm << std::endl;
// run 10 size instances (10000, 20000, 30000, etc.)
for (int i = min_size; i < test_size; i++){
std::cout << max_size << " instances." << std::endl;
// instantiate average value and sum value to zero on every new test.
float average = 0.0;
float sum = 0.0;
// create new cpu_times array on every new test.
float* cpu_times = new float[5];
// run five tests
for (int j = min_size; j < tests; j++){
// set time to 0 before running the cpu times
float time = 0.0;
// instantiate new decreasing order array every run.
int* decreasingArray = ag.generateDecreasingArray(max_size);
if (algorithm == "insertionSort"){
clock_t c_start = clock();
s.insertionSort(decreasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "bubbleSort"){
clock_t c_start = clock();
s.bubbleSort(decreasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "quickSort"){
clock_t c_start = clock();
s.quickSort(decreasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "mergeSort"){
clock_t c_start = clock();
s.mergeSort(decreasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else {
clock_t c_start = clock();
s.selectionSort(decreasingArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
//std::cout << "CPU Time (DecreasingArray): " << fixed << setprecision(3) << time << " ms." << std::endl;
std::cout << fixed << setprecision(3) << time << " ms" << std::endl;
// add cpu time to cpu_times array
cpu_times[j] = time;
// delete array at the end of each run to avoid memory leaks and faulty data
delete[] decreasingArray;
}
// add up the cpu_times values
for (int j = 0; j < 5; j++){
sum += cpu_times[j];
}
// find average value
average = sum / 5.0;
//std::cout << "Average time (" << max_size << " instances): " << fixed << setprecision(3) << average << "ms.\n" << std::endl;
std::cout << fixed << setprecision(3) << average << " ms\n" << std::endl;
// add average value to decreasing_array_averages array per number of runs
decreasing_array_averages[i] = average;
// once we pass our last instance (100000) break.
if (max_size == 100000){
break;
}
// go to the next instance (10000 to 20000)
max_size += 10000;
// delete cpu_times array to avoid memory leaks or faulty data
delete[] cpu_times;
}
// start max_size back at 10000
max_size = 10000;
std::cout << "\nRandom Array using " << algorithm << std::endl;
// run 10 size instances (10000, 20000, 30000, etc.)
for (int i = min_size; i < test_size; i++){
std::cout << max_size << " instances." << std::endl;
// instantiate average value and sum value to zero on every new test.
float average = 0.0;
float sum = 0.0;
// create new cpu_times array on every new test.
float* cpu_times = new float[5];
// run five tests
for (int j = min_size; j < tests; j++){
// set time to 0 before running the cpu times
float time = 0.0;
// instantiate new random order array every run.
int* randomArray = ag.generateRandomArray(max_size);
if (algorithm == "insertionSort"){
clock_t c_start = clock();
s.insertionSort(randomArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "bubbleSort"){
clock_t c_start = clock();
s.bubbleSort(randomArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "quickSort"){
clock_t c_start = clock();
s.quickSort(randomArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "mergeSort"){
clock_t c_start = clock();
s.mergeSort(randomArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else {
clock_t c_start = clock();
s.selectionSort(randomArray, max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
//std::cout << "CPU Time (RandomArray): " << fixed << setprecision(3) << time << " ms." << std::endl;
std::cout << fixed << setprecision(3) << time << " ms" << std::endl;
// add cpu time to cpu_times array
cpu_times[j] = time;
// delete array at the end of each run to avoid memory leaks and faulty data
delete[] randomArray;
}
// add up the cpu_times values
for (int j = 0; j < 5; j++){
sum += cpu_times[j];
}
// find average value
average = sum / 5.0;
//std::cout << "Average time (" << max_size << " instances): " << fixed << setprecision(3) << average << "ms.\n" << std::endl;
std::cout << fixed << setprecision(3) << average << " ms\n" << std::endl;
// add average value to random_array_averages array per number of runs
random_array_averages[i] = average;
// once we pass our last instance (100000) break.
if (max_size == 100000){
break;
}
// go to the next instance (10000 to 20000)
max_size += 10000;
// delete cpu_times array to avoid memory leaks or faulty data
delete[] cpu_times;
}
// start max_size back at 10000
max_size = 10000;
std::cout << "\nConstant Array using " << algorithm << std::endl;
// run 10 size instances (10000, 20000, 30000, etc.)
for (int i = 0; i < test_size; i++){
std::cout << max_size << " instances." << std::endl;
// instantiate average value and sum value to zero on every new test.
float average = 0.0;
float sum = 0.0;
// create new cpu_times array on every new test.
float* cpu_times = new float[5];
// run five tests
for (int j = 0; j < 5; j++){
// set time to 0 before running the cpu times
float time = 0.0;
if (algorithm == "insertionSort"){
clock_t c_start = clock();
s.insertionSort(ag.generateConstArray("Awesome", max_size), max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "bubbleSort"){
clock_t c_start = clock();
s.bubbleSort(ag.generateConstArray("Awesome", max_size), max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "quickSort"){
clock_t c_start = clock();
s.quickSort(ag.generateConstArray("Awesome", max_size), max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else if (algorithm == "mergeSort"){
clock_t c_start = clock();
s.mergeSort(ag.generateConstArray("Awesome", max_size), max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
else {
clock_t c_start = clock();
s.selectionSort(ag.generateConstArray("Awesome", max_size), max_size);
clock_t c_end = clock();
time = 1000 * (float(c_end) - float(c_start)) / CLOCKS_PER_SEC;
}
//std::cout << "CPU Time (ConstantArray): " << fixed << setprecision(3) << time << " ms." << std::endl;
std::cout << fixed << setprecision(3) << time << " ms" << std::endl;
// add cpu time to cpu_times array
cpu_times[j] = time;
// delete array at the end of each run to avoid memory leaks and faulty data
delete[] ag.generateConstArray("Awesome", max_size);
}
// add up the cpu_times values
for (int j = 0; j < 5; j++){
sum += cpu_times[j];
}
// find average value
average = sum / 5.0;
//std::cout << "Average time (" << max_size << " instances): " << fixed << setprecision(3) << average << " ms.\n" << std::endl;
std::cout << fixed << setprecision(3) << average << " ms\n" << std::endl;
// add average value to constant_array_averages array per number of runs
constant_array_averages[i] = average;
// once we pass our last instance (100000) break.
if (max_size == 100000){
break;
}
// go to the next instance (10000 to 20000)
max_size += 10000;
// delete cpu_times array to avoid memory leaks or faulty data
delete[] cpu_times;
}
// print averages of each array generated.
printAverages(increasing_array_averages, decreasing_array_averages, random_array_averages, constant_array_averages, array_size, algorithm);
// delete each array we used to hold specific (generated arrays) of averages from each test.
delete[] constant_array_averages;
delete[] random_array_averages;
delete[] decreasing_array_averages;
delete[] increasing_array_averages;
}