Remove duplicates from integer array

Question

I having a problem with coding this:

Write a static method named removeDuplicates that takes as input an array of integers and returns as a result a new

Answer 1

public int[] removeRepetativeInteger(int[] list){
        if(list.length == 0){
            return null;
        }
        if(list.length == 1){
            return list;
        }

    ArrayList numbers = new ArrayList<>();
    for(int i = 0; i< list.length; i++){
        if (!numbers.contains(list[i])){
            numbers.add(list[i]);
        }
    }
    Iterator valueIterator = numbers.iterator();
    int[] resultArray = new int[numbers.size()]; 
    int i = 0;
    while (valueIterator.hasNext()) {
        resultArray[i] = valueIterator.next();
        i++;
    }
    return resultArray;     

}