update: short code fast search demo

all_cases/short_code.cc

@@ -1,9 +1,19 @@
 #include <iostream>
 #include <algorithm>
+#include <unordered_map>
 #include "all_cases.h"
 
+// TODO: try to remove: `0` `O` `I` `l`
+
 const uint32_t ALL_CASES_NUMBER = 29334498;
 
+const uint32_t ALL_CASES_SIZE[] = {
+    2942906, 2260392, 2942906, 0,
+    2322050, 1876945, 2322050, 0,
+    2322050, 1876945, 2322050, 0,
+    2942906, 2260392, 2942906, 0,
+};
+
 std::string code_to_string(uint32_t short_code) {
     if (short_code >= ALL_CASES_NUMBER) {
         throw std::range_error("short code out of range");
@@ -46,16 +56,38 @@ uint32_t code_from_string(const std::string &short_code) {
 
 int main() {
 
-//    auto a = AllCases();
-//    a.find_all_cases();
-//    int sum = 0;
-//    for (auto &all_case : a.all_cases) {
-//        sum += (int)all_case.size();
-//    }
-//    std::cout << sum << std::endl;
+    auto a = AllCases();
+    a.find_all_cases();
+
+    std::vector<uint64_t> all_cases;
+    for (int n = 0; n < 16; ++n) {
+        uint64_t prefix = (uint64_t)n << 32;
+        for (auto &code : a.all_cases[n]) {
+            all_cases.emplace_back(prefix | code);
+        }
+    }
+
+    std::unordered_map<uint64_t, uint32_t> all_cases_dict;
+    for (int i = 0; i < all_cases.size(); ++i) {
+        all_cases_dict[all_cases[i]] = i;
+    }
+
+//    uint32_t short_code = 14323231;
+//    printf("%09lX\n", all_cases[0]);
+//    printf("%09lX\n", all_cases[short_code]);
+//    printf("%09lX\n", all_cases[ALL_CASES_NUMBER - 1]);
+
+    std::cout << "start search" << std::endl;
+    std::cout << code_to_string(all_cases_dict[0x6EC0F8800]) << std::endl;
+    std::cout << code_to_string(all_cases_dict[0x1A9BF0C00]) << std::endl;
+    std::cout << code_to_string(all_cases_dict[0x4FEA13400]) << std::endl;
+
+//    printf("%d\n", all_cases_dict[0x6EC0F8800]);
+//    printf("%d\n", all_cases_dict[0x1A9BF0C00]);
+//    printf("%d\n", all_cases_dict[0x4FEA13400]);
 
-    std::cout << code_to_string(14323231) << std::endl;
-    std::cout << code_from_string("8IzVj") << std::endl;
+//    std::cout << code_to_string(14323231) << std::endl;
+//    std::cout << code_from_string("8IzVj") << std::endl;
 
     return 0;
 }