Consider the code for the recursive method printSum shown in this code snippet, which is intended to return the sum of digits from 1 to n:
Public static int printSum(int n)
{
If (n

Question

Consider the code for the recursive method printSum shown in this code snippet, which is intended to return the sum of digits from 1 to n:
Public static int printSum(int n)
{
If (n <= 0) // line #1
{
Return 0; // line #
}
Else
{
Return (n + printSum(n)); //line #3
}
}
Which of the following statements is correct?
A) line #1 is incorrect, and should be changed to if (n <= 1)
B) line #3 is incorrect, and should be changed to return (printSum (n - 1));
C) line #3 is incorrect, and should be changed to return (n + printSum (n + 1));
D) line #3 is incorrect, and should be changed to return (n + printSum (n - 1));

Quizplus · Accepted Answer

Option A is incorrect because changing the condition to "n <= 1" will make the method return 1 instead of the sum of digits from 1 to n.

Option B is incorrect because changing line #3 to "return (printSum(n - 1))" will result in an infinite loop.

Option C is incorrect because changing line #3 to "return (n + printSum(n + 1))" will make the method add an extra digit (n+1) that is not part of the range of digits from 1 to n.

Option D is correct because it fixes the logic error in line #3 by recursively calling printSum with n-1, which ensures that the method will compute the sum of digits from 1 to n.

Consider the Code for the Recursive Method PrintSum Shown in This