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#include "linear-probing.hpp"
#include "separate-chaining.hpp"
#include <chrono>
#include <fstream>
#include <iostream>
#include <unordered_map>
#include <map>
std::vector<std::string> get_words(const std::string& file)
{
std::vector<std::string> words;
std::ifstream ifs("harry.txt");
if (!ifs.is_open())
{
std::cout << "File retrieval failed" << std::endl;
return {};
}
while (!ifs.eof())
{
std::string word;
ifs >> word;
words.emplace_back(word);
}
return words;
}
void test_hashmap_separate_chaining(size_t initial_capacity, double lf)
{
std::cout << "[Separate chaining tests]: Running test for " << initial_capacity << " initial capacity and " << lf
<< " load factor." << std::endl;
separate_chaining_hashmap<std::string, int> mp;
std::vector<std::string> words = get_words("harry.txt");
std::cout << "[Separate chaining tests]: Parsed " << words.size() << " words in std::vector." << std::endl;
unsigned dict_size = 0;
auto begin = std::chrono::high_resolution_clock::now();
for (const auto& word : words)
{
try
{
++mp.modify(word);
}
catch (...)
{
++dict_size;
mp.insert(word, 1);
}
}
auto end = std::chrono::high_resolution_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count();
std::cout << "[Separate chaining tests]: Parsed " << words.size() << " words in separate_chaining_hashmap<std::string, int>."
<< std::endl;
std::cout << "[Separate chaining tests]: Dict size: " << dict_size << std::endl;
std::cout << "[Separate chaining tests]: Buckets count: " << mp.bucket_count() << std::endl;
std::cout << "[Separate chaining tests]: Size: " << mp.size() << std::endl;
std::cout << "[Separate chaining tests]: Time: " << duration << " ms." << std::endl;
}
void test_hashmap_linear_probing(size_t jump_value, size_t initial_capacity, double lf)
{
std::cout << "[Linear probing tests]: Running test for " << initial_capacity << " initial capacity and " << lf
<< " load factor and " << jump_value << " as jump value." << std::endl;
linear_probing_hashmap<std::string, int> mp(initial_capacity, lf, jump_value);
std::vector<std::string> words = get_words("harry.txt");
std::cout << "[Linear probing tests]: Parsed " << words.size() << " words in std::vector." << std::endl;
int dict_size = 0;
auto begin = std::chrono::high_resolution_clock::now();
for (const auto& word : words)
{
try
{
++mp.modify(word);
}
catch (...)
{
++dict_size;
mp.insert(word, 1);
}
}
auto end = std::chrono::high_resolution_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count();
std::cout << "[Linear probing tests]: Parsed " << words.size() << " words in linear_probing_hashmap<std::string, int>."
<< std::endl;
std::cout << "[Linear probing tests]: Dict size: " << dict_size << std::endl;
std::cout << "[Linear probing tests]: Buckets count: " << mp.bucket_count() << std::endl;
std::cout << "[Linear probing tests]: Size: " << mp.size() << std::endl;
std::cout << "[Linear probing tests]: Time: " << duration << " ms." << std::endl;
}
void test_hashmap_std()
{
std::unordered_map<std::string, int> mp;
std::vector<std::string> words = get_words("harry.txt");
std::cout << "[std::unordered_map tests]: Parsed " << words.size() << " words in std::vector." << std::endl;
auto begin = std::chrono::high_resolution_clock::now();
for (const auto& word : words)
{
++mp[word];
}
auto end = std::chrono::high_resolution_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count();
std::cout << "[std::unordered_map tests]: Parsed " << words.size() << " words in std::unordered_map<std::string, int>."
<< std::endl;
std::cout << "[std::unordered_map tests]: Buckets count: " << mp.bucket_count() << std::endl;
std::cout << "[std::unordered_map tests]: Size: " << mp.size() << std::endl;
std::cout << "[std::unordered_map tests]: Time: " << duration << " ms." << std::endl;
}
void test_map_std()
{
std::map<std::string, int> mp;
std::vector<std::string> words = get_words("harry.txt");
std::cout << "[std::map tests]: Parsed " << words.size() << " words in std::vector." << std::endl;
auto begin = std::chrono::high_resolution_clock::now();
for (const auto& word : words)
{
++mp[word];
}
auto end = std::chrono::high_resolution_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count();
std::cout << "[std::map tests]: Parsed " << words.size() << " words in std::map<std::string, int>."
<< std::endl;
std::cout << "[std::map tests]: Size: " << mp.size() << std::endl;
std::cout << "[std::map tests]: Time: " << duration << " ms." << std::endl;
}
int main()
{
test_hashmap_separate_chaining(1000, 0.7);
std::cout << std::endl;
test_hashmap_linear_probing(1, 997, 0.7);
std::cout << std::endl;
test_hashmap_std();
std::cout << std::endl;
test_map_std();
}
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