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- // Go ahead and modify this example.
- import "dart:html";
- // Computes the nth Fibonacci number.
- int fibonacci(int n) {
- if (n < 2) return n;
- return fibonacci(n - 1) + fibonacci(n - 2);
- }
- // Displays a Fibonacci number.
- void main() {
- int i = 20;
- String message = "fibonacci($i) = ${fibonacci(i)}";
- // This example uses HTML to display the result and it will appear
- // in a nested HTML frame (an iframe).
- document.body.append(new HeadingElement.h1()..appendText(message));
- }
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