int evenPointer=0, oddPointer=1;    //奇偶位數指標
    int[] arr = new int[A.length];      //宣告return用的Array
      //依照機偶數判斷該依照哪個指標放入新的array
    for(int i =0; i<A.length; i++){   
        if(A[i]%2==0){
            arr[evenPointer]=A[i];
            evenPointer+=2;
        }else{
            arr[oddPointer]=A[i];
            oddPointer+=2;
        }    
    }
    
    return arr;
}