Debugging Reverse Engineered Code in Java

[Gcode-git]

Body

I've been working on reverse engineering a Java application, and I've encountered a bug that I can't seem to fix. The issue is with a method that calculates the factorial of a number. Here's the original code I reverse engineered

public int calculateFactorial(int n) { if (n == 0) { return 1; } return n * calculateFactorial(n - 1); }

When I input large numbers, it throws a StackOverflowError. Any suggestions on how to fix this?

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[JohnRaivenOlazo]

The issue you're experiencing is due to the recursion depth when you input large numbers, which causes a StackOverflowError. To handle large numbers more efficiently, you can use an iterative approach instead of recursion.

[Gcode-git]

Thanks! I tried looping through it and its now working

[ebndev]

Hi @JohnRaivenOlazo, thanks for taking the time to answer!

@Gcode-git glad you were able to resolve your issue 😄

[asdacosta]

Rewrite the method using a loop to avoid recursion. This is a more efficient approach for large factorials.

public int calculateFactorial(int n) {
    if (n == 0) {
        return 1;
    }
    int result = 1;
    for (int i = 1; i <= n; i++) {
        result *= i;
    }
    return result;
}

[Gcode-git]

Its working now man, thankssss