twoTimes

public class twoTimes{
    public static boolean twoTimes(int[] arr){
        int counter=0;
        // counts how often the current arrayfields number is in the entire array
        int positionA=0;
        //current position of the individual run through the array
        int positionB=0;
        //position of the current number in the array
        int currentNumber=arr[positionB];
        //deklaration of the first number thats to compare
        while((counter<=2)&&(positionB<arr.length)){
            currentNumber=arr[positionB];
        //loop is cancelled, if a number is more than 2 times in the array, or if every number has been compared to the rest of the array
            if(arr[positionA]==currentNumber){
                counter++;
                positionA++;
                //if the currently checked arrayfield contains the current number, the counter is increased
            }
            else {positionA++;
            }
            if(positionA==arr.length){
                if ((counter==2)&&(positionB<arr.length)){
                    counter=0;
                    positionB++;
                    positionA=0;}
                else if(counter==1){
                    counter=3;
                    positionA=0;
                }
        }
    }
    return (counter==2);}
}