ad1_2.rs

use std::fs;
fn calculate_zeros(lines:Vec<&str>, start: i32, modulo: i32)-> i32 {
    let mut current = start;  
    let mut answer = 0;
    let mut prev;
    for line in lines {
        let direction = line.chars().nth(0);
        let sign: i32;
        if direction == Some('L'){
            sign = -1;}
        else{
            sign = 1;
        }
        let turn: i32 = line[1..].trim().parse().unwrap();
        prev = current;

        current += sign * (turn % modulo);
        answer += (turn / modulo).abs();
        // println!("{current}");
        if current % modulo != 0 {
            answer += (current / modulo).abs();
            // println!("{line}, {answer}-> zero here");
        }
        current = current % modulo;
        // println!("{line}, {answer}, {turn}, {current},- {prev}, -> answer update here 0");
        if (current == 0) && (prev != 0){
            answer += 1;
            // println!("{line}, {answer}-> zero here");
        } else {
            answer += (current / modulo).abs();
            // println!("{line}, {answer} -> answer update here 1");
        }
         if current * prev < 0 {
            answer += 1;
            // println!("{line}, {answer} -> answer update here 2");
        }
        // println!("Current: {answer}, {current}");
    }
    return answer;
}
fn main() {
    let file_path = "C:\\Users\\iuliia.bubis\\Documents\\MobaXterm\\home\\advent_of_code\\task1_test.txt";
    let file_path2 = "C:\\Users\\iuliia.bubis\\Documents\\MobaXterm\\home\\advent_of_code\\task1.txt";
    println!("Read the file {}", file_path);
    let task = fs::read_to_string(file_path)
        .expect("REad the file error?");
    let test_task: Vec<&str> = task.lines().collect();
    let task2 = fs::read_to_string(file_path2)
        .expect("REad the file error?");
    let task_lines: Vec<&str> = task2.lines().collect();
    // println!("In the file:\n{task}");
    let test1: Vec<&str> = "R50\nL100\nL100".lines().collect();
    let test2: Vec<&str> = "R150\nL18\nR118".lines().collect();
    let test3: Vec<&str> = "L50".lines().collect();
    let test4: Vec<&str> = "L150".lines().collect();
    println!("Test 1 {:?} : {}", test1, calculate_zeros(test1.clone(), 50, 100));
    println!("Test 2 {:?} The answer is: {}",test2, calculate_zeros(test2.clone(), 50, 100));    
    println!("Test 3 {:?} The answer is: {}", test3, calculate_zeros(test3.clone(), 50, 100));
    println!("Test 4 Test 4 {:?} The answer is: {}", test4, calculate_zeros(test4.clone(), 50, 100));
    println!("The answer is: {}", calculate_zeros(test_task, 50, 100));
    println!("The answer is: {}", calculate_zeros(task_lines, 50, 100));
}