(Solved):Consider the following mystery method that is passed a non-null array filled with integers and that uses a recursive companion method: public static int mystery(int [] A) # return mystery(A, 0, A…. View Answer…

 

Question

Consider the following mystery method that is passed a non-null array filled with integers and that uses a recursive companion method:

public static int mystery(int{eq}displaystyle []

{/eq} A) {

  1. return mystery(A, 0, A.length – 1);

}

private static int mystery(int{eq}displaystyle []

{/eq} A, int first, int last) {

  1. if (first == last) return A{eq}displaystyle [first];

    {/eq}

  1. int middle = (first + last)/2;
  2. return mystery(A, first, middle) + mystery(A, middle+1, last);

}

Answer the following questions regarding the code above:

A) What

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