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package driver;
import java.util.HashSet;
import fileIO.TextFile;
public class GetUniquePrefixes {
public static void main(String[] args){
String fname=args[0];
int prefix=Integer.parseInt(args[1]);
TextFile tf=new TextFile(fname);
HashSet<String> set=new HashSet<String>();
String header=null;
StringBuilder sequence=new StringBuilder();
for(String line=tf.nextLine(); line!=null; line=tf.nextLine()){
if(line.startsWith(">")){
if(sequence.length()>0){
if(sequence.length()>prefix){sequence.setLength(prefix);}
String s=sequence.toString();
if(set.contains(s)){}
else{
set.add(s);
System.out.println(header+"\n"+s);
}
}
sequence.setLength(0);
header=line;
}else{
sequence.append(line);
}
}
}
}
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