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  1. import java.io.BufferedReader;
  2. import java.io.IOException;
  3. import java.io.InputStreamReader;
  4. import java.util.*;
  5.  
  6. class prog
  7. {
  8.     // Read multiline input in Java 7 using `BufferedReader` class
  9.     public static void main(String[] args) throws IOException {
  10.         Set<String> s = new TreeSet<>();
  11.         InputStreamReader in = new InputStreamReader(System.in);
  12.         BufferedReader buffer = new BufferedReader(in);
  13.         String line;
  14.         while ((line = buffer.readLine()) != null)  {
  15.  
  16.             String[] tokens = line.split("\\s");
  17.             for (int i = 0; i < tokens.length; i++){
  18.                 if(!tokens[i].trim().equals("") || tokens[i]!=null)
  19.                     tokens[i] =  tokens[i].trim();
  20.             }
  21.  
  22.             //System.out.println(Arrays.toString(tokens));
  23.             for(int i = 0; i < tokens.length;++i) {
  24.                 //tokens[i].replace(" ", "");
  25.                 s.add(tokens[i]);
  26.             }
  27.  
  28.  
  29.         }
  30.         s.remove("");
  31.  
  32.         //System.out.println("Set: " + s);
  33.         //for(int i = 0; i < s.size();++i) {
  34.         //    System.out.print("/"+ s[i] + "/"+"\n");
  35.         //}
  36.         //Iterator itr = s.iterator();
  37.  
  38.         // check element is present or not. if not loop will
  39.         // break.
  40.         //while (itr.hasNext()) {
  41.             System.out.println(s.size());
  42.         }
  43.     }
Success #stdin #stdout 0.1s 48912KB
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https://ideone.com/gPNPx1
language:
Java (HotSpot 12)
created:
1 year ago
visibility:
public

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