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Jun 25th, 2018
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  1. import java.io.BufferedReader;
  2. import java.io.IOException;
  3. import java.io.InputStreamReader;
  4. import java.util.Map;
  5. import java.util.TreeMap;
  6. import java.util.regex.Matcher;
  7. import java.util.regex.Pattern;
  8.  
  9. public class problem04Weather {
  10. public static void main(String[] args) throws IOException {
  11. BufferedReader BF = new BufferedReader(new InputStreamReader(System.in));
  12.  
  13. TreeMap<String,TreeMap<Double,String>> cities = new TreeMap<>();
  14.  
  15.  
  16. while (true){
  17. String input = BF.readLine();
  18. if (input.equals("end")){
  19. break;
  20. }
  21. Pattern pattern = Pattern.compile("(?<city>[A-Z]{2})(?<temp>[0-9]{2}.[0-9]*)(?<type>[A-Za-z]+)[\\|]");
  22. Matcher m = pattern.matcher(input);
  23. if (m.find()){
  24. String city =m.group("city");
  25. double temp = Double.parseDouble(m.group("temp"));
  26. String type = m.group("type");
  27. TreeMap<Double,String> b = new TreeMap<>();
  28. b.put(temp,type);
  29. cities.put(city,b);
  30.  
  31. }
  32.  
  33. }
  34. for (Map.Entry<String, TreeMap<Double, String>> mapEntry : cities.entrySet()) {
  35.  
  36. System.out.print(mapEntry.getKey()+" => ");
  37. TreeMap<Double, String> nestedValues = mapEntry.getValue();
  38.  
  39. for (Map.Entry<Double, String> nestedEntries : nestedValues.entrySet()) {
  40. double da = nestedEntries.getKey();
  41. System.out.printf("%.2f => %s",da,nestedEntries.getValue());
  42. System.out.println();
  43.  
  44. }
  45. }
  46. }
  47. }
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