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Remove target directory and day2 part 2 of 2016.

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This commit is contained in:
Dan Chadwick
2024-12-01 20:08:19 -05:00
parent 466c59198f
commit 05f7f8efe8
404 changed files with 85 additions and 747 deletions
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115
2016/twenty16/src/day2.rs
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@@ -4,6 +4,7 @@ use std::collections::HashMap;
#[allow(dead_code)]
#[derive(Debug)]
#[derive(Clone)]
struct Coords {
x: i32,
y: i32,
@@ -24,56 +25,55 @@ pub fn run_day_2() -> Solution {
let moves_file = fs::read_to_string("./sources/day2.txt").expect("Unable to read file.");
let moves = moves_file.split("\n");
let mut code = String::new();
let mut keypad = build_keypad();
let keypad = build_keypad();
let keypad_p2 = build_keypad_p2();
let mut position = Coords {
x: 0,
x: -2,
y: 0,
};
let mut part_1_solution = String::new();
let mut part_2_solution = String::new();
for directions in moves {
if directions.len() < 1 {
continue;
}
for direction in directions.chars() {
// Need to move around the keypad to determine where we are.
let is_eligible = check_move_eligibility(position.clone(), direction, 2);
if !is_eligible {
continue;
}
match direction {
'U' => {
if position.y == 0 || position.y == -1 {
position.y = position.y + 1;
}
position.y = position.y + 1;
},
'D' => {
if position.y == 0 || position.y == 1 {
position.y = position.y - 1;
}
position.y = position.y - 1;
},
'L' => {
if position.x == 0 || position.x == 1 {
position.x = position.x - 1;
}
position.x = position.x - 1;
},
'R' => {
if position.x == 0 || position.x == -1 {
position.x = position.x + 1;
}
position.x = position.x + 1;
},
_ => {},
}
}
// Now using the coordinate string, lookup the keypad value.
let coordinates_str = position.get_coordinate_string();
let key = keypad.get(&coordinates_str).expect("No key found");
part_1_solution.push_str(&key.to_string());
let key = keypad_p2.get(&coordinates_str).expect("No key found");
part_2_solution.push_str(&key.to_string());
}
// SOLUTION.
let mut answers = String::new();
let p1_intro = "Part 1: ".to_string();
let p1_intro = "Part 1: 97289".to_string();
let newline = "\n".to_string();
answers.push_str(&p1_intro);
answers.push_str(&part_1_solution);
answers.push_str(&newline);
let p2_intro = "Part 2: ".to_string();
answers.push_str(&p2_intro);
answers.push_str(&part_2_solution);
let solution = Solution {
day: 2,
answer: answers,
@@ -82,16 +82,71 @@ pub fn run_day_2() -> Solution {
return solution;
}
fn build_keypad() -> HashMap<String, i32> {
let mut keypad: HashMap<String, i32> = HashMap::new();
keypad.insert("-11".to_string(), 1);
keypad.insert("01".to_string(), 2);
keypad.insert("11".to_string(), 3);
keypad.insert("-10".to_string(), 4);
keypad.insert("00".to_string(), 5);
keypad.insert("10".to_string(), 6);
keypad.insert("-1-1".to_string(), 7);
keypad.insert("0-1".to_string(), 8);
keypad.insert("1-1".to_string(), 9);
fn build_keypad() -> HashMap<String, String> {
let mut keypad: HashMap<String, String> = HashMap::new();
keypad.insert("-11".to_string(), 1.to_string());
keypad.insert("01".to_string(), 2.to_string());
keypad.insert("11".to_string(), 3.to_string());
keypad.insert("-10".to_string(), 4.to_string());
keypad.insert("00".to_string(), 5.to_string());
keypad.insert("10".to_string(), 6.to_string());
keypad.insert("-1-1".to_string(), 7.to_string());
keypad.insert("0-1".to_string(), 8.to_string());
keypad.insert("1-1".to_string(), 9.to_string());
keypad
}
fn build_keypad_p2() -> HashMap<String, String> {
let mut keypad: HashMap<String, String> = HashMap::new();
// row 1.
keypad.insert("02".to_string(), 1.to_string());
// row 2.
keypad.insert("-11".to_string(), 2.to_string());
keypad.insert("01".to_string(), 3.to_string());
// row 3.
keypad.insert("-20".to_string(), 5.to_string());
keypad.insert("-10".to_string(), 6.to_string());
keypad.insert("00".to_string(), 7.to_string());
keypad.insert("10".to_string(), 8.to_string());
keypad.insert("20".to_string(), 9.to_string());
// row 4.
keypad.insert("-1-1".to_string(), "A".to_string());
keypad.insert("0-1".to_string(), "B".to_string());
keypad.insert("1-1".to_string(), "C".to_string());
// row 5.
keypad.insert("0-2".to_string(), "D".to_string());
keypad
}
fn check_move_eligibility(coords: Coords, direction: char, part: i32) -> bool {
let mut keypad = build_keypad();
if part == 2 {
keypad = build_keypad_p2();
}
let mut proposed_new_coords = coords;
match direction {
'U' => {
proposed_new_coords.y = proposed_new_coords.y + 1;
},
'D' => {
proposed_new_coords.y = proposed_new_coords.y - 1;
},
'L' => {
proposed_new_coords.x = proposed_new_coords.x - 1;
},
'R' => {
proposed_new_coords.x = proposed_new_coords.x + 1;
},
_ => {}
};
let proposed_new_coords = proposed_new_coords.get_coordinate_string();
let results = keypad.get(&proposed_new_coords);
match results {
Some(_s) => {
return true;
},
None => {
return false;
}
}
}