华容道高性能计算引擎
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#pragma once
#include <vector>
#include <cstdint>
#include <unordered_map>
class ShortCode {
public:
enum Mode {NORMAL, FAST};
std::vector<uint32_t> basic_ranges;
std::vector<uint64_t> all_cases_list; // short_code -> common_code
std::unordered_map<uint64_t, uint32_t> all_cases_dict; // common_code -> short_code
ShortCode() = default;
void speed_up(enum Mode mode);
explicit ShortCode(enum Mode mode);
// uint32_t zip_short_code(uint64_t code);
// uint64_t unzip_short_code(uint32_t short_code);
uint64_t fast_decode(uint32_t short_code);
uint32_t fast_encode(uint64_t common_code);
uint64_t tiny_decode(uint32_t short_code);
uint32_t tiny_encode(uint64_t common_code);
private:
// std::vector<uint64_t> all_cases_list; // short_code -> common_code
// std::unordered_map<uint64_t, uint32_t> all_cases_dict; // common_code -> short_code
void build_mappings();
void build_base_ranges();
};