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Dustin J. Mitchell 6d19292f16
Comprehensive Rust v2 (#1073)
I've taken some work by @fw-immunant and others on the new organization
of the course and condensed it into a form amenable to a text editor and
some computational analysis. You can see the inputs in `course.py` but
the interesting bits are the output: `outline.md` and `slides.md`.

The idea is to break the course into more, smaller segments with
exercises at the ends and breaks in between. So `outline.md` lists the
segments, their duration, and sums those durations up per-day. It shows
we're about an hour too long right now! There are more details of the
segments in `slides.md`, or you can see mostly the same stuff in
`course.py`.

This now contains all of the content from the v1 course, ensuring both
that we've covered everything and that we'll have somewhere to redirect
every page.

Fixes #1082.
Fixes #1465.

---------

Co-authored-by: Nicole LeGare <dlegare.1001@gmail.com>
Co-authored-by: Martin Geisler <mgeisler@google.com>
2023-11-29 16:39:24 +01:00

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Rust

// Copyright 2023 Google LLC
//
// 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.
// ANCHOR: solution
// ANCHOR: collatz_length
/// Determine the length of the collatz sequence beginning at `n`.
fn collatz_length(mut n: i32) -> u32 {
// ANCHOR_END: collatz_length
let mut len = 1;
while n > 1 {
n = if n % 2 == 0 { n / 2 } else { 3 * n + 1 };
len += 1;
}
len
}
// ANCHOR: tests
#[test]
fn test_collatz_length() {
assert_eq!(collatz_length(11), 15);
}
// ANCHOR_END: tests
// ANCHOR: main
fn main() {
// ANCHOR_END: main
println!("Length: {}", collatz_length(11));
}