#include "hash.h"

std::uint64_t hash1(std::string const& s)
{
    // viktad summa
    std::uint64_t result { };
    std::uint64_t multiplier { 1 };
    for (char c : s)
    {
        result += c * multiplier;
        multiplier = 2*multiplier;
    }
    return result;
}

std::uint64_t hash2(std::string const& s)
{
    // djb2
    std::uint64_t result { 5183 };
    for (char c : s)
        result = 33*result + c;
    return result;
}

std::uint64_t hash3(std::string const& s)
{
    // sdbm
    std::uint64_t result { };
    for (char c : s)
        result = 65599*result + c;
    return result;
}