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-rw-r--r--examples/rust/fibonacci/src/lib.rs48
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diff --git a/examples/rust/fibonacci/src/lib.rs b/examples/rust/fibonacci/src/lib.rs
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--- a/examples/rust/fibonacci/src/lib.rs
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-// Copyright 2015 The Bazel Authors. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/// Returns the nth Fibonacci number.
-///
-/// # Examples
-///
-/// ```
-/// fibonacci::fibonacci(5)
-/// ```
-pub fn fibonacci(n: u64) -> u64 {
- if n < 2 {
- return n;
- }
- let mut n1: u64 = 0;
- let mut n2: u64 = 1;
- for _ in 1..n {
- let sum = n1 + n2;
- n1 = n2;
- n2 = sum;
- }
- n2
-}
-
-#[cfg(test)]
-mod test {
- use super::fibonacci;
-
- #[test]
- fn test_fibonacci() {
- let numbers : Vec<u64> =
- vec![0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144];
- for (i, number) in numbers.iter().enumerate() {
- assert_eq!(*number, fibonacci(i as u64));
- }
- }
-}