Answer Posted / murli

solution without taking time complexity into account

List arr = new ArrayList();
for(int i=0;i<count;i++){
for(int j=i+1;j<count;j++){
if(arr.get(i)!=null && arr.get(i).equals(arr.get(j))){
arr.set(j, null);
}

}
}

while(arr.contains(null))
arr.remove(null);

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