Question { RMSI, 18240 }

How to declare unique ArrayList ?

Answer

small modification for first program. But that one is really excellent.i really proud Indresh_ips.


import java.util.*;
class ArrayListUnique2 {

static public ArrayList uniqueArrayList(ArrayList arrl) {
int i;
String check="";
for(int k=0;k String s=arrl.get(k).toString();


if(!check.contains(s)){
check = check+s+", ";
}else{
arrl.remove(s);
}
}
return arrl;
}
public static void main (String[] args) {
ArrayList al= new ArrayList();

al.add("A");
al.add("A");
al.add("B");
al.add("C");
al.add("B");
al.add("A");
al.add("D");
al.add("D");
al.add("D");
al.add("D");
al.add("A");
al.add("B");
al.add("F");
al.add("G");
al.add("G");
al.add(10);
al.add(5);
al.add(10);
al.add(5);
System.out.println ("Before declaring unique:"+al);

ArrayList a=ArrayListUnique.uniqueArrayList(al);

System.out.println ("after declaring unique: "+a);
}
}

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