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main.cpp
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main.cpp
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#include <iostream>
#include <merge_sort.h>
#include <quicksort.h>
#include <introspective_sort.h>
#include <random>
int main() {
std::default_random_engine generator;
std::uniform_int_distribution<int> distribution(0, INT_MAX);
auto rand = std::bind(distribution, generator);
scanf("%*i");
auto comp = [](const int &a, const int &b) -> bool { return a <= b; };
auto comp2 = [](const int &a, const int &b) -> bool { return a >= b; };
for (int size : {10000, 50000, 100000, 500000, 1000000}) {
printf("\nTable size: %i\n", size);
//1 i 3
for (int i = 0; i < 3; ++i) {
int *tab;
tab = new int[size];
std::chrono::nanoseconds time;
//1
switch (i) {
case 0: {
printf("merge_sort\n");
time = time.zero();
for (int k = 0; k < 100; ++k) {
for (int j = 0; j < size; ++j) {
tab[j] = rand();
}
auto start = std::chrono::steady_clock::now();
merge_sort(tab, size, comp);
time += std::chrono::steady_clock::now() - start;
}
break;
}
case 1: {
printf("quicksort\n");
time = time.zero();
for (int k = 0; k < 100; ++k) {
for (int j = 0; j < size; ++j) {
tab[j] = rand();
}
auto start = std::chrono::steady_clock::now();
quicksort(tab, size, comp);
time += std::chrono::steady_clock::now() - start;
}
break;
}
case 2: {
printf("introspective_sort\n");
time = time.zero();
for (int k = 0; k < 100; ++k) {
for (int j = 0; j < size; ++j) {
tab[j] = rand();
}
auto start = std::chrono::steady_clock::now();
introspective_sort(tab, size, comp);
time += std::chrono::steady_clock::now() - start;
}
break;
}
}
printf("Execution time: %lli\n", std::chrono::duration_cast<std::chrono::nanoseconds>(time).count());
//3
switch (i) {
case 0: {
printf("merge_sort\n");
time = time.zero();
for (int k = 0; k < 100; ++k) {
for (int j = 0; j < size; ++j) {
tab[j] = rand();
}
auto start = std::chrono::steady_clock::now();
merge_sort(tab, size, comp2);
time += std::chrono::steady_clock::now() - start;
}
break;
}
case 1: {
printf("quicksort\n");
time = time.zero();
for (int k = 0; k < 100; ++k) {
for (int j = 0; j < size; ++j) {
tab[j] = rand();
}
auto start = std::chrono::steady_clock::now();
quicksort(tab, size, comp2);
time += std::chrono::steady_clock::now() - start;
}
break;
}
case 2: {
printf("introspective_sort\n");
time = time.zero();
for (int k = 0; k < 100; ++k) {
for (int j = 0; j < size; ++j) {
tab[j] = rand();
}
auto start = std::chrono::steady_clock::now();
introspective_sort(tab, size, comp2);
time += std::chrono::steady_clock::now() - start;
}
break;
}
}
printf("Vice execution time: %lli\n", std::chrono::duration_cast<std::chrono::nanoseconds>(time).count());
delete[] tab;
}
}
printf("Part sorted");
//2
for (int size : {10000, 50000, 100000, 500000, 1000000}) {
printf("\nTable size: %i\n", size);
for (int k = 0; k < 6; ++k) {
double sorted;
switch (k) {
case 0:
sorted = 25;
break;
case 1:
sorted = 50;
break;
case 2:
sorted = 75;
break;
case 3:
sorted = 95;
break;
case 4:
sorted = 99;
break;
case 5:
sorted = 99.7;
break;
}
printf("Pre sorted: %lf\n", sorted);
//2
for (int i = 0; i < 3; ++i) {
int *tab;
tab = new int[size];
std::chrono::nanoseconds time;
//2
switch (i) {
case 0: {
printf("merge_sort\n");
time = time.zero();
for (int k = 0; k < 100; ++k) {
for (int j = 0; j < size; ++j) {
tab[j] = rand();
}
quicksort(tab, size * sorted / 100, comp);
auto start = std::chrono::steady_clock::now();
merge_sort(tab, size, comp);
time += std::chrono::steady_clock::now() - start;
}
break;
}
case 1: {
printf("quicksort\n");
time = time.zero();
for (int k = 0; k < 100; ++k) {
for (int j = 0; j < size; ++j) {
tab[j] = rand();
}
quicksort(tab, size * sorted / 100, comp);
auto start = std::chrono::steady_clock::now();
quicksort(tab, size, comp);
time += std::chrono::steady_clock::now() - start;
}
break;
}
case 2: {
printf("introspective_sort\n");
time = time.zero();
for (int k = 0; k < 100; ++k) {
for (int j = 0; j < size; ++j) {
tab[j] = rand();
}
quicksort(tab, size * sorted / 100, comp);
auto start = std::chrono::steady_clock::now();
introspective_sort(tab, size, comp);
time += std::chrono::steady_clock::now() - start;
}
break;
}
}
printf("Execution time: %lli\n", std::chrono::duration_cast<std::chrono::nanoseconds>(time).count());
delete[] tab;
}
}
}
return 0;
}