April 05
Prde. Ismael H. F. Santos
- ismael@tecgraf.puc-rio.br
2
Exemplo Bulk Operation
- HashSet
import java.util.*;
public class FindDups2 {
public static void main(String args[]) {
Set<String> uniques
= new HashSet<String> ();
Set<String> dups =
new HashSet<String> ();
for (int i=0; i<args.length; i++) // Com for-each fica
....
String a = args[i]; // for(
String a : args )
if ( ! uniques.add(a )
dups.add(a);
uniques.removeAll(dups); //
Destructive set-difference !
System.out.println("Unique words:
" + uniques);
System.out.println("Duplicate words:
" + dups);
}
}
nExecução:
n% java FindDups2 i came i saw i left
Unique words:
[came, left, saw]
Duplicate
words: [i]