javaType errorEasy

Integer division truncates percentage calculation

Time: 0:00

BugFind the bug and fix the code

What it should do

Calculate percentage ratio of part to whole. Example: calculateRatioPercent(1, 4) -> 25.0

What happens instead

Function returns 0.0 instead of 25.0 due to integer division truncation

public class Main {
    public static double calculateRatioPercent(int part, int whole) {
        if (whole == 0) return 0.0;
        // part / whole divides two integers and truncates decimals before multiplying by 100
        return (part / whole) * 100.0;
    }

    public static void main(String[] args) {
        System.out.println(calculateRatioPercent(1, 4));
    }
}

Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).

⏱️0:00

Hints

🏆 0 hints = Flawless Solve

Think & Test Cooldown

2:00 remaining

Take a moment to read the bug symptom and trace the code with Run & Check before unlocking Hint 1.

Hint 2

Unlocks after Hint 1

Hint 3

Unlocks after Hint 2

This bug belongs to the type errors pattern

Totals that concatenate, sorts that put 10 before 9, comparisons that refuse to run.

Learn the type errors pattern Step through your own code

<iframe src="https://trybughunt.com/embed/6131968c-163e-4fd0-bec6-199b02bac4b0" title="Debugging challenge: Integer division truncates percentage calculation" width="100%" height="580" loading="lazy" style="border:1px solid #d4d4d8;border-radius:12px;max-width:760px"></iframe> <p style="font-size:14px">Debugging challenge from <a href="https://trybughunt.com/challenges/6131968c-163e-4fd0-bec6-199b02bac4b0">TryBugHunt</a></p>

public class Main { public static double calculateRatioPercent(int part, int whole) { if (whole == 0) return 0.0; // part / whole divides two integers and truncates decimals before multiplying by 100 return (part / whole) * 100.0; } public static void main(String[] args) { System.out.println(calculateRatioPercent(1, 4)); } }

Integer division truncates percentage calculation

What it should do

What happens instead

More type errors to practise

Integer division truncates percentage calculation

What it should do

What happens instead

More type errors to practise