Two non-negative integers x and y are equal if either: both are 0, or x-1 and y-1 are equal write a boolean-method named equals that recursively determines whether its two int parameters are equal and returns true if they are and false otherwise.

Following are the code which is mention below.

bool equals (int x, int y)  // method equals

{

if( (x<0) || (y<0) )  // check number if it is less then 0

return false;  // return false

if( (x==0) && (y==0) )  // check condition if number is equal to 0

return true;  // return true

return equals(x-1, y-1);  

}

Explanation:

                   1.   if x and y both are less then  0 then it returns "false".

                   2.  if x and y both are equal to 0 then it returns "true"

                   3.   Otherwise it return x-1 and y-1.

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