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fiatcode 2026-02-18 14:29:55 +07:00
parent ad774b89c8
commit d38a8c1107
2 changed files with 7 additions and 3 deletions
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8
lib/string_calculator.dart
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@ -7,6 +7,7 @@
/// 3. Two numbers comma-delimited returns sum /// 3. Two numbers comma-delimited returns sum
/// 4. Handle newlines as delimiters /// 4. Handle newlines as delimiters
/// 5. Support custom delimiters: "//[delimiter]\n[numbers]" /// 5. Support custom delimiters: "//[delimiter]\n[numbers]"
library;
class StringCalculator { class StringCalculator {
int add(String numbers) { int add(String numbers) {
@ -16,7 +17,9 @@ class StringCalculator {
} }
// Bug 2: Single number parsing // Bug 2: Single number parsing
if (!numbers.contains(',') && !numbers.contains('\n') && !numbers.startsWith('//')) { if (!numbers.contains(',') &&
!numbers.contains('\n') &&
!numbers.startsWith('//')) {
return int.parse(numbers); // Fixed: Removed off-by-one error return int.parse(numbers); // Fixed: Removed off-by-one error
} }
@ -42,7 +45,8 @@ class StringCalculator {
// Bug 3: Off-by-one in summation // Bug 3: Off-by-one in summation
int sum = 0; int sum = 0;
for (int i = 0; i < numList.length; i++) { // Fixed: Include last element for (int i = 0; i < numList.length; i++) {
// Fixed: Include last element
sum += numList[i]; sum += numList[i];
} }

2
test/string_calculator_test.dart
View file

@ -1,5 +1,5 @@
import 'package:test/test.dart';
import 'package:tdd_katas/string_calculator.dart'; import 'package:tdd_katas/string_calculator.dart';
import 'package:test/test.dart';
void main() { void main() {
group('String Calculator - Bug Hunt', () { group('String Calculator - Bug Hunt', () {