big refactor

This commit is contained in:
jacekpoz 2024-05-06 20:21:11 +02:00
parent 6e52722bdb
commit 9c22f0dbb0
Signed by: poz
SSH key fingerprint: SHA256:JyLeVWE4bF3tDnFeUpUaJsPsNlJyBldDGV/dIKSLyN8
22 changed files with 289 additions and 172 deletions

1
.gitignore vendored
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@ -1,2 +1,3 @@
l1
.ccls-cache/
*/target

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@ -4,4 +4,4 @@ version = "0.1.0"
edition = "2021"
[dependencies]
libgen = { path = "../libgen" }
libgen = { path = "../../../libgen" }

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@ -4,4 +4,4 @@ version = "0.1.0"
edition = "2021"
[dependencies]
libgen = { path = "../libgen" }
libgen = { path = "../../../libgen" }

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@ -4,4 +4,4 @@ version = "0.1.0"
edition = "2021"
[dependencies]
libgen = { path = "../libgen" }
libgen = { path = "../../../libgen" }

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@ -4,4 +4,4 @@ version = "0.1.0"
edition = "2021"
[dependencies]
libsort = { path = "../libsort" }
libsort = { path = "../../../libsort" }

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@ -1,6 +1,6 @@
use std::io;
use libsort::{hybrid_sort, is_sorted, print_list};
use libsort::{hybrid_sort::HybridSort, is_sorted, print_list, Sort};
fn main() -> io::Result<()> {
let mut buffer = String::new();
@ -33,7 +33,9 @@ fn main() -> io::Result<()> {
println!();
}
let res = hybrid_sort(&mut list, 8, print);
let mut hybrid = HybridSort::new(8, print);
hybrid.sort_mut(&mut list);
if print {
println!();
@ -44,8 +46,8 @@ fn main() -> io::Result<()> {
print_list(&list);
}
println!("swaps: {}", res.swaps);
println!("comparisons: {}", res.comparisons);
println!("swaps: {}", hybrid.num_swap());
println!("comparisons: {}", hybrid.num_comp());
println!("is sorted: {}", is_sorted(&list));

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@ -4,4 +4,4 @@ version = "0.1.0"
edition = "2021"
[dependencies]
libsort = { path = "../libsort" }
libsort = { path = "../../../libsort" }

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@ -1,6 +1,6 @@
use std::io;
use libsort::{insertion_sort, is_sorted, print_list};
use libsort::{insertion_sort::InsertionSort, is_sorted, print_list, Sort};
fn main() -> io::Result<()> {
let mut buffer = String::new();
@ -33,7 +33,9 @@ fn main() -> io::Result<()> {
println!();
}
let res = insertion_sort(&mut list, print);
let mut insertion = InsertionSort::new(print);
insertion.sort_mut(&mut list);
if print {
println!();
@ -44,8 +46,8 @@ fn main() -> io::Result<()> {
print_list(&list);
}
println!("swaps: {}", res.swaps);
println!("comparisons: {}", res.comparisons);
println!("swaps: {}", insertion.num_swap());
println!("comparisons: {}", insertion.num_comp());
println!("is sorted: {}", is_sorted(&list));

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@ -1,154 +0,0 @@
pub fn print_list(list: &[u64]) {
print!("[");
list.iter()
.enumerate()
.for_each(|(i, x)| {
if *x < 10 {
print!("0");
}
print!("{}", x);
if i != list.len() - 1 {
print!(", ")
}
});
println!("]");
}
#[derive(PartialEq)]
pub enum CompareResult {
LESS, EQUAL, GREATER
}
pub fn compare(a: u64, b: u64, comparisons: &mut u64) -> CompareResult {
*comparisons += 1;
if a < b {
CompareResult::LESS
} else if a > b {
CompareResult::GREATER
} else {
CompareResult::EQUAL
}
}
pub fn swap(list: &mut [u64], i: usize, j: usize, swaps: &mut u64) {
*swaps += 1;
list.swap(i, j);
}
#[derive(Debug, Clone)]
pub struct SortResult {
pub comparisons: u64,
pub swaps: u64,
}
impl Default for SortResult {
fn default() -> Self {
Self { comparisons: 0, swaps: 0 }
}
}
use CompareResult::*;
pub fn insertion_sort(list: &mut [u64], print: bool) -> SortResult {
let mut res = SortResult::default();
for i in 1..list.len() {
let mut j = i as usize;
while j > 0 && compare(list[j - 1], list[j], &mut res.comparisons) == GREATER {
swap(list, j - 1, j, &mut res.swaps);
j -= 1;
}
if print { print_list(&list); }
}
res
}
pub fn lomuto_partition(list: &mut [u64], res: &mut SortResult) -> u64 {
let mut _res = SortResult::default();
let pivot = list.len() - 1;
let mut _swap = 0;
for i in 0..pivot {
if compare(list[i as usize], list[pivot as usize], &mut _res.comparisons) == LESS {
if _swap != i {
swap(list, _swap, i, &mut _res.swaps);
}
_swap += 1;
}
}
if _swap != pivot {
list.swap(_swap, pivot);
}
res.swaps += _res.swaps;
res.comparisons += _res.comparisons;
_swap as u64
}
pub fn quick_sort(list: &mut [u64], print: bool) -> SortResult {
let mut res = SortResult::default();
if list.len() > 1 {
let pivot = lomuto_partition(list, &mut res);
if print {
println!("pivot = {pivot}:");
print_list(&list);
}
let res1 = quick_sort(&mut list[..pivot as usize], print);
res.swaps += res1.swaps;
res.comparisons += res1.comparisons;
let res2 = quick_sort(&mut list[pivot as usize + 1..], print);
res.swaps += res2.swaps;
res.comparisons += res2.comparisons;
}
res
}
pub fn hybrid_sort(list: &mut [u64], switch: u64, print: bool) -> SortResult {
let mut res = SortResult::default();
if list.len() as u64 <= switch {
if print { println!("<hybrid_insertion>"); }
let insertion_res = insertion_sort(list, print);
if print { println!("</hybrid_insertion>"); }
return insertion_res;
}
let pivot = lomuto_partition(list, &mut res);
if print {
println!("<hybrid_quick>");
println!("pivot = {pivot}:");
print_list(&list);
println!("</hybrid_quick>");
}
let res1 = hybrid_sort(&mut list[..pivot as usize], switch, print);
res.swaps += res1.swaps;
res.comparisons += res1.comparisons;
let res2 = hybrid_sort(&mut list[pivot as usize + 1..], switch, print);
res.swaps += res2.swaps;
res.comparisons += res2.comparisons;
res
}
pub fn is_sorted(list: &[u64]) -> bool {
for i in 0..(list.len() - 1) {
if list[i] > list[i + 1] {
return false;
}
}
true
}

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@ -4,4 +4,4 @@ version = "0.1.0"
edition = "2021"
[dependencies]
libsort = { path = "../libsort" }
libsort = { path = "../../../libsort" }

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@ -1,6 +1,6 @@
use std::io;
use libsort::{is_sorted, print_list, quick_sort};
use libsort::{is_sorted, print_list, quick_sort::QuickSort, Sort};
fn main() -> io::Result<()> {
let mut buffer = String::new();
@ -33,7 +33,9 @@ fn main() -> io::Result<()> {
println!();
}
let res = quick_sort(&mut list, print);
let mut quick = QuickSort::new(print);
quick.sort_mut(&mut list);
if print {
println!();
@ -44,8 +46,8 @@ fn main() -> io::Result<()> {
print_list(&list);
}
println!("swaps: {}", res.swaps);
println!("comparisons: {}", res.comparisons);
println!("swaps: {}", quick.num_swap());
println!("comparisons: {}", quick.num_comp());
println!("is sorted: {}", is_sorted(&list));

1
libgen/.gitignore vendored Normal file
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@ -0,0 +1 @@
target

1
libsort/.gitignore vendored Normal file
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@ -0,0 +1 @@
target

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@ -0,0 +1,76 @@
use crate::{insertion_sort::InsertionSort, quick_sort::QuickSort, Sort};
pub struct HybridSort {
comparisons: u64,
swaps: u64,
should_print: bool,
insertion: InsertionSort,
quick: QuickSort,
switch: u64,
}
impl HybridSort {
pub fn new(switch: u64, should_print: bool) -> Self {
Self {
comparisons: 0,
swaps: 0,
should_print,
insertion: InsertionSort::new(should_print),
quick: QuickSort::new(should_print),
switch,
}
}
}
impl Sort for HybridSort {
fn new(should_print: bool) -> Self {
Self::new(16, should_print)
}
fn sort_mut(&mut self, list: &mut Vec<u64>) {
if list.len() as u64 <= self.switch {
if self.should_print { println!("<hybrid_insertion>"); }
self.insertion.sort_mut(list);
if self.should_print { println!("</hybrid_insertion>"); }
self.comparisons += self.insertion.num_comp();
self.swaps += self.insertion.num_swap();
return;
}
let pivot = self.quick.lomuto_partition(list);
self.comparisons += self.quick.num_comp();
self.swaps += self.quick.num_swap();
if self.should_print {
println!("<hybrid_quick>");
println!("pivot = {pivot}:");
println!("{:?}", list);
println!("</hybrid_quick>");
}
let mut vec = Vec::new();
for i in 0..pivot as usize {
vec.push(list[i]);
}
self.sort_mut(&mut vec);
vec.clear();
for i in (pivot as usize + 1)..list.len() {
vec.push(list[i]);
}
self.sort_mut(&mut vec);
}
fn num_comp(&self) -> u64 {
self.comparisons
}
fn num_swap(&self) -> u64 {
self.swaps
}
fn reset_state(&mut self) {
self.comparisons = 0;
self.swaps = 0;
}
}

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@ -0,0 +1,62 @@
use crate::{CompareResult, Sort};
pub struct InsertionSort {
comparisons: u64,
swaps: u64,
should_print: bool,
}
impl InsertionSort {
fn swap(&mut self, list: &mut Vec<u64>, i: usize, j: usize) {
self.swaps += 1;
list.swap(i, j);
}
fn compare(&mut self, a: u64, b: u64) -> CompareResult {
self.comparisons += 1;
if a < b {
CompareResult::LESS
} else if a > b {
CompareResult::GREATER
} else {
CompareResult::EQUAL
}
}
}
impl Sort for InsertionSort {
fn new(should_print: bool) -> Self {
Self {
comparisons: 0,
swaps: 0,
should_print,
}
}
fn sort_mut(&mut self, list: &mut Vec<u64>) {
for i in 1..list.len() {
let mut j = i as usize;
use CompareResult::*;
while j > 0 && self.compare(list[j - 1], list[j]) == GREATER {
self.swap(list, j - 1, j);
j -= 1;
}
if self.should_print { println!("{:?}", list); }
}
}
fn num_comp(&self) -> u64 {
self.comparisons
}
fn num_swap(&self) -> u64 {
self.swaps
}
fn reset_state(&mut self) {
self.comparisons = 0;
self.swaps = 0;
}
}

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libsort/src/lib.rs Normal file
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@ -0,0 +1,31 @@
pub mod insertion_sort;
pub mod hybrid_sort;
pub mod quick_sort;
pub trait Sort {
fn new(should_print: bool) -> Self;
fn sort_mut(&mut self, list: &mut Vec<u64>);
fn sort(&mut self, list: &Vec<u64>) -> Vec<u64> {
let mut list = list.clone();
self.sort_mut(&mut list);
list
}
fn num_comp(&self) -> u64;
fn num_swap(&self) -> u64;
fn reset_state(&mut self);
}
#[derive(PartialEq)]
pub enum CompareResult {
LESS, EQUAL, GREATER
}
pub fn is_sorted(list: &[u64]) -> bool {
for i in 0..(list.len() - 1) {
if list[i] > list[i + 1] {
return false;
}
}
true
}

93
libsort/src/quick_sort.rs Normal file
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@ -0,0 +1,93 @@
use crate::{CompareResult, Sort};
pub struct QuickSort {
comparisons: u64,
swaps: u64,
should_print: bool,
}
impl QuickSort {
fn swap(&mut self, list: &mut Vec<u64>, i: usize, j: usize) {
self.swaps += 1;
list.swap(i, j);
}
fn compare(&mut self, a: u64, b: u64) -> CompareResult {
self.comparisons += 1;
if a < b {
CompareResult::LESS
} else if a > b {
CompareResult::GREATER
} else {
CompareResult::EQUAL
}
}
pub fn lomuto_partition(&mut self, list: &mut Vec<u64>) -> u64 {
let pivot = list.len() - 1;
let mut swap = 0;
for i in 0..pivot {
use CompareResult::*;
if self.compare(list[i as usize], list[pivot as usize]) == LESS {
if swap != i {
self.swap(list, swap, i);
}
swap += 1;
}
}
if swap != pivot {
list.swap(swap, pivot);
}
swap as u64
}
}
impl Sort for QuickSort {
fn new(should_print: bool) -> Self {
Self {
comparisons: 0,
swaps: 0,
should_print,
}
}
fn sort_mut(&mut self, list: &mut Vec<u64>) {
if list.len() > 1 {
let pivot = self.lomuto_partition(list);
if self.should_print {
println!("pivot = {pivot}:");
println!("{:?}", list);
}
let mut vec = Vec::new();
for i in 0..pivot as usize {
vec.push(list[i]);
}
self.sort_mut(&mut vec);
vec.clear();
for i in (pivot as usize + 1)..list.len() {
vec.push(list[i]);
}
self.sort_mut(&mut vec);
}
}
fn num_comp(&self) -> u64 {
self.comparisons
}
fn num_swap(&self) -> u64 {
self.swaps
}
fn reset_state(&mut self) {
self.comparisons = 0;
self.swaps = 0;
}
}