45 lines
1.0 KiB
Rust
45 lines
1.0 KiB
Rust
use std::fs;
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use std::char;
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fn main() {
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let lines = fs::read_to_string("input").expect("Unable to read file");
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//Part 1
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println!("{}", reduce(lines.clone()));
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//Part 2
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let mut all_lengths: Vec<i32> = Vec::new();
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for i in 0..26 {
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let big_char = char::from_u32(65+i).unwrap();
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let little_char = char::from_u32(97+i).unwrap();
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let string = lines.clone().replace(big_char, "").replace(little_char, "");
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all_lengths.push(reduce(string));
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}
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println!("{}", all_lengths.iter().min().unwrap());
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}
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fn reduce(string: String) -> i32 {
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let all_chars: Vec<char> = string.chars().into_iter().collect();
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let mut stack: Vec<char> = Vec::new();
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for c in all_chars{
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if !stack.is_empty(){
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let sub = *stack.last().unwrap() as i32 - c as i32;
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if sub == 32 || sub == -32 {
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stack.pop();
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} else{
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stack.push(c.clone());
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}
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} else {
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stack.push(c.clone());
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}
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}
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return stack.len() as i32
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} |