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32 lines
872 B
Rust
32 lines
872 B
Rust
// Copyright 2023 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// ANCHOR: solution
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// ANCHOR: fib
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fn fib(n: u32) -> u32 {
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// ANCHOR_END: fib
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if n <= 2 {
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return 1;
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} else {
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return fib(n - 1) + fib(n - 2);
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}
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}
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// ANCHOR: main
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fn main() {
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let n = 20;
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println!("fib({n}) = {}", fib(n));
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}
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// ANCHOR_END: main
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