mod merge_sort;
mod quick_sort;

use crate::quick_sort::quick_sort;
use crate::merge_sort::merge_sort_inversions;
use std::fs::File;
use std::io;
use std::io::{BufRead, BufReader, Error, ErrorKind};
use std::vec::Vec;

fn read_to_vector(path: &str) -> Result<Vec<i64>, io::Error> {
    let file = File::open(path)?;
    let br = BufReader::new(file);
    let mut v = Vec::new();
    for line in br.lines() {
        let line = line?;
        let n = line
            .trim()
            .parse()
            .map_err(|e| Error::new(ErrorKind::InvalidData, e))?;
        v.push(n);
    }
    Ok(v)
}

#[allow(dead_code)]
fn c1a2() {
    let vec = read_to_vector("data/course_1_assignment_2.txt").unwrap();
    let (_sorted, inversions) = merge_sort_inversions(vec);
    println!("course 1 assignment 2: {:?}", inversions);
}

fn c1a3() {
    // let mut vec = read_to_vector("data/course_1_assignment_3.txt").unwrap();
    let mut vec = vec![2, 20, 1, 15, 3, 11, 13, 6, 16, 10, 19, 5, 4, 9, 8, 14, 18, 17, 7, 12];
    let mut comp_acc: usize = 0;
    quick_sort(&mut vec, &mut comp_acc);
    // println!("{:?}", vec);
    println!("{:?}", comp_acc);
    println!("{:?}", 3/2);
    /*
    	1: 162085
		2: 164123
		3: ?
    */
}

fn main() {
    //c1a2();
    c1a3();
}