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use std::fs;
fn parse_input(input_string: &str, column1: &mut Vec<i32>, column2: &mut Vec<i32>) {
let mut counter = 0;
input_string.split('\n').for_each(|line| {
if line.is_empty() {
return;
}
let values = line
.split_once(' ')
.expect("Expected line to split successfully");
// println!("{}, {}", values.0, values.1);
let first = values.0.trim().parse::<i32>().unwrap();
let second = values.1.trim().parse::<i32>().unwrap();
column1.insert(counter, first);
column2.insert(counter, second);
counter += 1;
});
}
pub fn part1(input_path: &str) {
println!("Part 1, Day 1");
let input = fs::read_to_string(input_path)
.expect("Expected to read the file");
let mut loc1: Vec<i32> = Vec::new();
let mut loc2: Vec<i32> = Vec::new();
parse_input(&input, &mut loc1, &mut loc2);
let mut sum = 0;
for i in 0..loc1.len() {
let diff = (loc1[i] - loc2[i]).abs();
// println!("1: {}, 2: {}, d: {}", loc1[i], loc2[i], diff);
sum += diff;
}
println!("Solution: {}", sum);
}
pub fn part2(input_path: &str) {
println!("Part 2, Day 1");
let input = fs::read_to_string(input_path)
.expect("Expected to read file normally");
let mut list1: Vec<i32> = Vec::new();
let mut list2: Vec<i32> = Vec::new();
parse_input(&input, &mut list1, &mut list2);
let mut similarity_score_sum = 0;
for elem in &list1 {
let mut occurences = 0;
for i in &list2 {
if elem == i {
occurences += 1;
}
}
similarity_score_sum += elem * occurences;
}
println!("Solution: {}", similarity_score_sum);
}
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