Remove Duplicates from Sorted Array


public class Solution {
    public int removeDuplicates(int[] A) {
        
        if(A == null || A.length <2){
            return A.length;
        }
        
        int position = 1;
        
        for(int i = 1; i < A.length; i++){
            if(A[i-1] != A[i]){
                A[position++] = A[i];
            }
        }
        
        return position;
        
    }
}
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