Wrote program for Day12

This commit is contained in:
Mariano Riefolo 2024-08-06 16:20:08 +02:00
parent 759f1bb3a1
commit 52289a98a2
5 changed files with 138 additions and 1 deletions

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@ -58,7 +58,7 @@ We encourage you to share your progress and ask questions in the Discussions sec
| Day #9 | [Trapping Rain Water](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-09_Trapping-Rain-Water) | :white_check_mark: | | Day #9 | [Trapping Rain Water](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-09_Trapping-Rain-Water) | :white_check_mark: |
| Day #10 | [Unique Binary Search Tree](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-10_Unique-Binary-Search-Trees) | :white_check_mark: | | Day #10 | [Unique Binary Search Tree](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-10_Unique-Binary-Search-Trees) | :white_check_mark: |
| Day #11 | [Restore IP Addresses](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-11_Restore-IP-Addresses) | :white_check_mark: | | Day #11 | [Restore IP Addresses](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-11_Restore-IP-Addresses) | :white_check_mark: |
| Day #12 | [Mountains or Valleys](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-12_Mountains_And_Valleys) | :white_large_square: | | Day #12 | [Mountains or Valleys](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-12_Mountains_And_Valleys) | :white_check_mark: |
| Day #13 | [Need Help With Your Packing](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-13_Need-Help-With-Packing) | :white_large_square: | | Day #13 | [Need Help With Your Packing](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-13_Need-Help-With-Packing) | :white_large_square: |
| Day #14 | [The Karacas Encryption Algorithm](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-14_Karacas-Encryption-Algorithm) | :white_large_square: | | Day #14 | [The Karacas Encryption Algorithm](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-14_Karacas-Encryption-Algorithm) | :white_large_square: |
| Day #15 | [Valid Anagram](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-03/Day-15_Valid-Anagram) | :white_large_square: | | Day #15 | [Valid Anagram](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-03/Day-15_Valid-Anagram) | :white_large_square: |

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[package]
name = "day12"
version = "0.1.0"
edition = "2021"
[dependencies]

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pub enum LandscapeType {
Mountain,
Valley,
Neither,
}
fn is_mountain(numbers: &[isize], max: (usize, &isize)) -> bool {
if max.0 > 0 && max.0 < numbers.len() - 1 {
for (i, n) in numbers[1..max.0].iter().enumerate() {
if numbers[i] > *n {
return false;
}
}
for (i, n) in numbers[1 + max.0..numbers.len() - 1].iter().enumerate() {
if *n > numbers[max.0 + i] {
return false;
}
}
true
} else {
false
}
}
fn is_valley(numbers: &[isize], min: (usize, &isize)) -> bool {
if min.0 > 0 && min.0 < numbers.len() - 1 {
for (i, n) in numbers[1..min.0].iter().enumerate() {
if numbers[i] < *n {
return false;
}
}
for (i, n) in numbers[1 + min.0..numbers.len()].iter().enumerate() {
if *n < numbers[min.0 + i] {
return false;
}
}
true
} else {
false
}
}
pub fn landscape_type(numbers: &[isize]) -> LandscapeType {
if numbers.is_empty() {
return LandscapeType::Neither;
}
let mut min = (usize::MAX, &isize::MAX);
let mut max = (usize::MIN, &isize::MIN);
for (i, n) in numbers.iter().enumerate() {
if n < min.1 {
min = (i, n);
}
if n > max.1 {
max = (i, n);
}
}
if is_mountain(numbers, max) {
LandscapeType::Mountain
} else if is_valley(numbers, min) {
LandscapeType::Valley
} else {
LandscapeType::Neither
}
}

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use std::io::{self, Write};
use day12::landscape_type;
fn main() {
let mut buffer = String::new();
print!("Insert space separated numbers: ");
io::stdout().flush().expect("Failed to flush stdout.");
io::stdin()
.read_line(&mut buffer)
.expect("Failed to read from input");
let numbers: Vec<isize> = buffer
.trim()
.split(' ')
.filter(|x| !x.is_empty())
.map(|x| {
x.parse()
.expect("Error: Please enter numbers separated by spaces, e.g. 1 2 3")
})
.collect();
let result = match landscape_type(&numbers) {
day12::LandscapeType::Mountain => "Mountain",
day12::LandscapeType::Valley => "Valley",
day12::LandscapeType::Neither => "Neither",
};
println!("{}", result);
}

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use day12::{landscape_type, LandscapeType};
#[test]
fn example1() {
assert!(matches!(
landscape_type(&[3, 4, 5, 4, 3]),
LandscapeType::Mountain
))
}
#[test]
fn example2() {
assert!(matches!(
landscape_type(&[9, 7, 3, 1, 2, 4]),
LandscapeType::Valley
))
}
#[test]
fn example3() {
assert!(matches!(landscape_type(&[9, 8, 9]), LandscapeType::Valley))
}
#[test]
fn example4() {
assert!(matches!(
landscape_type(&[9, 8, 9, 8]),
LandscapeType::Neither
))
}