dart-sdk/tests/language/unsorted/fibo_test.dart
Robert Nystrom d4154ac6dc Migrate language_2/unsorted to NNBD.
Change-Id: Iad2963c7f9c184b089dc6d15aa4442f58d194bc2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151983
Reviewed-by: Nicholas Shahan <nshahan@google.com>
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
2020-06-26 18:34:14 +00:00

34 lines
861 B
Dart

// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// Dart test program calculating the Fibonacci sequence.
import "package:expect/expect.dart";
class Helper {
static int fibonacci(int n) {
int a = 0, b = 1, i = 0;
while (i++ < n) {
a = a + b;
b = a - b;
}
return a;
}
}
class FiboTest {
static testMain() {
Expect.equals(0, Helper.fibonacci(0));
Expect.equals(1, Helper.fibonacci(1));
Expect.equals(1, Helper.fibonacci(2));
Expect.equals(2, Helper.fibonacci(3));
Expect.equals(3, Helper.fibonacci(4));
Expect.equals(5, Helper.fibonacci(5));
Expect.equals(102334155, Helper.fibonacci(40));
}
}
main() {
FiboTest.testMain();
}