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  1. import java.util.regex.Matcher;
  2. import java.util.regex.Pattern;
  3.  
  4. public class Main
  5. {
  6.    public static void main(String[] args)
  7.    {
  8.       String mainstr = "[[data link control], [communication, []], [computer, [applications     of computer, number of computer]], [world wide web], [lesson, [covered in lesson]], [access to remote], [marketing and sale], [electronic fund transfer], [network, [network of network, wide area network, communication network, computer network, [area network, [local area network, metropolitan area network]]]]]";
  9.       String search = "area network";
  10.       Pattern p = Pattern.compile("(?:^|, |\\[)(" + search + ")(?:]|, |$)");
  11.       Matcher m = p.matcher(mainstr);
  12.       if (m.find())
  13.       {
  14.          int start = m.start(1);
  15.          int end = start + search.length();
  16.          int count = 0;
  17.          int pos = end;
  18.          if (mainstr.charAt(end+2) == '[')
  19.          {
  20.             while (count != -1)
  21.                if (mainstr.charAt(++pos) == ']')
  22.                   count--;
  23.                else if (mainstr.charAt(++pos) == '[')
  24.                   count++;
  25.             System.out.println("Ancestors = " + mainstr.substring(end+2, pos-1));
  26.          }
  27.          count = 0;
  28.          pos = start;
  29.          int lastComma = -1;
  30.          while (count != 2)
  31.             switch (mainstr.charAt(--pos))
  32.             {
  33.                case ']': count--; break;
  34.                case '[': count++; break;
  35.                case ',': lastComma = pos;
  36.             }
  37.          System.out.println("Parent = " + mainstr.substring(pos+1, lastComma));
  38.       }
  39.    }
  40. }
  41.  
Success #stdin #stdout 0.06s 380224KB
comments (?)
stdin 
Standard input is empty
stdout 
Ancestors = [local area network, metropolitan area network]
Parent = network of network
https://ideone.com/Q4mi5F
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
secret

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