What Is Wrong with the Following Recursive Sum Method? the Method

question 56

Multiple Choice

What is wrong with the following recursive sum method? The method is supposed to sum up the values between 1 and x (for instance, sum(5) should be 5 + 4 + 3 + 2 + 1 = 15) .
Public int sum(int x)
{
If (x = = 0) return 0;
Else return sum(x - 1) + x;
}

• A) the base case should return 1 instead of 0
• B) the recursive case should return sum(x - 1) + 1; instead of sum(x - 1) + x;
• C) the base case condition should be (x <= 0) instead of (x = = 0)
• D) the recursive case should return sum(x) + 1;
• E) the method should return a boolean instead of an int

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Definitions:

Deliberate Practice

A method of skill development involving focused, structured practice with the aim of improving performance.

Grit

A personality trait characterized by perseverance and passion for achieving long-term goals despite obstacles.

Acceptable Mistake

An error or fault that is deemed permissible within a certain context or situation, often seen as a learning opportunity.

Blame-free Environment

A culture that focuses on problem-solving rather than assigning fault, encouraging open communication and learning.