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  1. #include <array>
  2. #include <iostream>
  3. #include <iomanip>
  4. #include <map>
  5. #include <string>
  6.  
  7. std::string to_bar_code(unsigned int zip_code)
  8. {
  9.     const std::array<std::string, 10> digit {{
  10.         "11000", "00011", "00101", "00110", "01001",
  11.         "01010", "01100", "10001", "10010", "10100"
  12.     }};
  13.     return "1"
  14.         + digit[(zip_code / 10000) % 10]
  15.         + digit[(zip_code / 1000) % 10]
  16.         + digit[(zip_code / 100) % 10]
  17.         + digit[(zip_code / 10) % 10]
  18.         + digit[zip_code % 10]
  19.         + "1";
  20. }
  21.  
  22. int to_zip_code(const std::string& bar_code)
  23. {
  24.     const std::map<std::string, int> digits = {
  25.         {"11000", 0}, // special case
  26.         {"00011", 1},
  27.         {"00101", 2},
  28.         {"00110", 3},
  29.         {"01001", 4},
  30.         {"01010", 5},
  31.         {"01100", 6},
  32.         {"10001", 7},
  33.         {"10010", 8},
  34.         {"10100", 9}
  35.     };
  36.     const std::string bar_digits[5]{ {bar_code, 1, 5}, {bar_code, 6, 5}, {bar_code, 11, 5}, {bar_code, 16, 5}, {bar_code, 21, 5} };
  37.     unsigned int res = 0;
  38.     for (const auto& d : bar_digits)
  39.     {
  40.         res *= 10;
  41.         res += digits.at(d);
  42.     }
  43.     return res;
  44. }
  45.  
  46.  
  47. int main()
  48. {
  49.     std::cout << "Digits" << "       " << "Bar Code" << std::endl;
  50.     for (const auto zip : {99504, 12345, 67890}) {
  51.         std::cout << zip << std::setw(35) << to_bar_code(zip) << std::endl;
  52.     }
  53.     std::cout << "Digits" << "       " << "Bar Code" << std::endl;
  54.     for (const auto bar : {"110100101000101011000010011", "100101010011100001100110001", "110100001011100001100010011", "100011000110101000011100101"}) {
  55.         std::cout << to_zip_code(bar) << std::setw(35) << bar << std::endl;
  56.     }    
  57. }
  58.  
Success #stdin #stdout 0s 3420KB
comments (?)
stdin 
Standard input is empty
stdout 
Digits       Bar Code
99504        110100101000101011000010011
12345        100011001010011001001010101
67890        101100100011001010100110001
Digits       Bar Code
99504        110100101000101011000010011
24060        100101010011100001100110001
92064        110100001011100001100010011
11518        100011000110101000011100101
https://ideone.com/bjX1F0
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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