Primer commit

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "wordle_solver"
+version = "0.1.0"

Cargo.toml

@@ -0,0 +1,4 @@
+[package]
+name = "wordle_solver"
+version = "0.1.0"
+edition = "2024"

src/lib.rs

@@ -0,0 +1 @@
+pub mod words;

src/main.rs

@@ -0,0 +1,467 @@
+use std::{
+    collections::{HashMap, HashSet},
+    io::{Write, stdin, stdout},
+};
+
+use wordle_solver::words::WORDS;
+
+const PRIMES: [u128; 54] = [
+    2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97,
+    101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193,
+    197, 199, 211, 223, 227, 229, 233, 239, 241, 251,
+];
+
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Hash)]
+enum LetterState {
+    #[default]
+    Gray,
+    Yellow,
+    Green,
+}
+
+#[derive(Debug, Default, PartialEq, Eq, Clone, Copy, Hash)]
+struct Result([LetterState; 5]);
+
+fn main() {
+    let all_words: Vec<&str> = HashSet::from(WORDS).iter().copied().collect();
+    let mut current_words = all_words.clone();
+
+    let mut hmap = HashMap::new();
+
+    loop {
+        let old_length = current_words.len();
+        println!("Palabras restantes: {}", old_length);
+        let mut word = String::from("     ");
+        while !all_words.contains(&word.trim()) {
+            word = "".to_string();
+            print!("Palabra: ");
+            stdout().flush().unwrap();
+            stdin().read_line(&mut word).unwrap();
+        }
+        let mut res_string = String::default();
+        print!("Resultado: ");
+        stdout().flush().unwrap();
+        stdin().read_line(&mut res_string).unwrap();
+        let res = res_from_string(res_string);
+        get_remaining_words(&word, &res, &mut current_words);
+        let new_length = current_words.len();
+        let eliminadas = old_length - new_length;
+        println!(
+            "    Palabras eliminadas: {} ({:.2}%)",
+            eliminadas,
+            eliminadas as f32 * 100_f32 / old_length as f32
+        );
+
+        if current_words.len() == 1 {
+            println!("{}", current_words[0]);
+            break;
+        }
+
+        let l = all_words.len();
+
+        let mut words_score = all_words
+            .iter()
+            .enumerate()
+            .map(|(i, w)| {
+                print!("\r{:.2}%", 100_f32 * i as f32 / l as f32);
+                stdout().flush().unwrap();
+                (*w, get_score(w, &current_words, &mut hmap))
+            })
+            .collect::<Vec<(&str, f32)>>();
+        print!("\r");
+        stdout().flush().unwrap();
+
+        words_score.sort_by(|a, b| {
+            if (a.1 - 0.5).abs() > (b.1 - 0.5).abs() {
+                std::cmp::Ordering::Greater
+            } else {
+                std::cmp::Ordering::Less
+            }
+        });
+
+        for (w, s) in words_score.iter().take(5) {
+            println!("    {}: {}", w, s);
+        }
+
+        if current_words.len() < 6 {
+            println!("    Palabras posibles: ");
+            for w in current_words.clone() {
+                println!("    {}", w);
+            }
+        }
+    }
+}
+
+fn res_from_string(s: String) -> Result {
+    let mut r = Result::default();
+    for (i, l) in r.0.iter_mut().enumerate() {
+        match s.chars().nth(i).unwrap() {
+            'g' => *l = LetterState::Gray,
+            'v' => *l = LetterState::Green,
+            'a' => *l = LetterState::Yellow,
+            _ => panic!("Bad letter {i}: {:?}", s.chars().nth(i).unwrap()),
+        }
+    }
+    r
+}
+
+fn get_score(word: &str, words: &[&str], hmap: &mut HashMap<u128, Result>) -> f32 {
+    let mut possible = 0_f32;
+    let l = words.len();
+    let other_words = Vec::from(words);
+
+    let mut score_hmap: HashMap<(&str, Result), f32> = HashMap::new();
+
+    for real_word in other_words.clone() {
+        // let hmap = HashMap::new();
+        let res = get_result(word, real_word, hmap);
+        if let Some(score) = score_hmap.get(&(word, res)) {
+            possible += score;
+        } else {
+            let c = get_number_rem_words(word, &res, &other_words);
+            score_hmap.insert((word, res), c as f32 / l as f32);
+            possible += c as f32 / l as f32;
+        }
+    }
+
+    possible / l as f32
+}
+
+#[inline]
+fn get_remaining_words(word: &str, result: &Result, words: &mut Vec<&str>) {
+    *words = words
+        .iter()
+        .copied()
+        .filter(|&s| is_possible(word, result, s) && *s != word[..5])
+        .collect();
+}
+
+fn get_number_rem_words(word: &str, result: &Result, words: &[&str]) -> usize {
+    let mut count = 0;
+
+    for possible_word in words {
+        if is_possible(word, result, possible_word) && *possible_word != word {
+            count += 1;
+        }
+    }
+    count
+}
+
+fn get_result(guess: &str, real_acc: &str, hmap: &mut HashMap<u128, Result>) -> Result {
+    let hash = hash_words(guess, real_acc);
+    if let Some(r) = hmap.get(&hash) {
+        return *r;
+    }
+    let real = real_acc;
+    assert!(
+        guess.chars().count() == 5,
+        "Guessed word length is not 5: {:?} length: {}",
+        guess,
+        guess.chars().count()
+    );
+    assert!(
+        real.chars().count() == 5,
+        "Real word length is not 5: {:?} length: {}",
+        real.chars(),
+        real.chars().count()
+    );
+    let mut res = [LetterState::Gray; 5];
+
+    let mut count_g: HashMap<char, u8> = HashMap::new();
+    let mut count_r: HashMap<char, u8> = HashMap::new();
+    for c in guess.chars() {
+        *count_g.entry(c).or_insert(0) += 1;
+    }
+    for c in real.chars() {
+        *count_r.entry(c).or_insert(0) += 1;
+    }
+
+    for (i, letter) in guess
+        .chars()
+        .collect::<Vec<char>>()
+        .iter()
+        .enumerate()
+        .rev()
+    {
+        let l = guess.chars().nth(i).unwrap();
+        *count_g.entry(guess.chars().nth(i).unwrap()).or_insert(0) -= 1;
+        if real.chars().nth(i).unwrap() == *letter {
+            res[i] = LetterState::Green;
+            *count_r.entry(l).or_insert(0) -= 1;
+        } else if real.contains(*letter) && count_g.get(&l).unwrap() < count_r.get(&l).unwrap() {
+            res[i] = LetterState::Yellow;
+        }
+    }
+    let r = Result(res);
+    hmap.insert(hash, r);
+    r
+}
+
+fn is_possible(guessed: &str, result: &Result, to_check: &str) -> bool {
+    let mut count_g: HashMap<char, u8> = HashMap::new();
+    let mut count_r: HashMap<char, u8> = HashMap::new();
+    for c in guessed.chars() {
+        *count_g.entry(c).or_insert(0) += 1;
+    }
+    for c in to_check.chars() {
+        *count_r.entry(c).or_insert(0) += 1;
+    }
+
+    for i in (0..5).rev() {
+        let letter = guessed.chars().nth(i).unwrap();
+        *count_g.entry(letter).or_insert(0) -= 1;
+        match result.0[i] {
+            LetterState::Gray => {
+                if to_check.contains(letter)
+                    && count_g.get(&letter).unwrap() < count_r.get(&letter).unwrap()
+                {
+                    return false;
+                }
+            }
+            LetterState::Yellow => {
+                if !to_check.contains(letter) || to_check.chars().nth(i).unwrap() == letter {
+                    return false;
+                }
+            }
+            LetterState::Green => {
+                *count_r.entry(letter).or_insert(0) -= 1;
+                if to_check.chars().nth(i).unwrap() != letter {
+                    return false;
+                }
+            }
+        }
+    }
+
+    true
+}
+
+fn hash_words(word: &str, real: &str) -> u128 {
+    let mut acc = 1;
+    for i in 0..5 {
+        let mut v = word.chars().nth(i).unwrap().to_ascii_lowercase() as usize - 97;
+        if v > 26 {
+            v = 26;
+        }
+
+        acc *= PRIMES[v];
+    }
+    for i in 0..5 {
+        let mut v = real.chars().nth(i).unwrap().to_ascii_lowercase() as usize - 70;
+        if v > 53 {
+            v = 53;
+        }
+        acc *= PRIMES[v];
+    }
+    acc
+}
+
+/* --------------- TESTS --------------- */
+
+#[test]
+fn test_get_result_aureo_manga() {
+    let mut hmap = HashMap::new();
+    assert_eq!(
+        get_result(&String::from("aureo"), "manga", &mut hmap),
+        Result([
+            LetterState::Yellow,
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Gray
+        ])
+    );
+}
+
+#[test]
+fn test_get_result_aabbb_manga() {
+    let mut hmap = HashMap::new();
+    assert_eq!(
+        get_result(&String::from("aabbb"), "manga", &mut hmap),
+        Result([
+            LetterState::Yellow,
+            LetterState::Green,
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Gray
+        ])
+    );
+}
+
+#[test]
+fn test_get_result_ababb_manga() {
+    let mut hmap = HashMap::new();
+    assert_eq!(
+        get_result(&String::from("ababb"), "manga", &mut hmap),
+        Result([
+            LetterState::Yellow,
+            LetterState::Gray,
+            LetterState::Yellow,
+            LetterState::Gray,
+            LetterState::Gray
+        ])
+    );
+}
+
+#[test]
+fn test_get_result_abaab_manga() {
+    let mut hmap = HashMap::new();
+    assert_eq!(
+        get_result(&String::from("abaab"), "manga", &mut hmap),
+        Result([
+            LetterState::Yellow,
+            LetterState::Gray,
+            LetterState::Yellow,
+            LetterState::Gray,
+            LetterState::Gray
+        ])
+    );
+}
+#[test]
+fn test_get_result_hucha_mucha() {
+    let mut hmap = HashMap::new();
+    assert_eq!(
+        get_result(&String::from("hucha"), "mucha", &mut hmap),
+        Result([
+            LetterState::Gray,
+            LetterState::Green,
+            LetterState::Green,
+            LetterState::Green,
+            LetterState::Green
+        ])
+    );
+}
+
+#[test]
+fn test_get_result_gafea_salto() {
+    let mut hmap = HashMap::new();
+    assert_eq!(
+        get_result(&String::from("gafea"), "salto", &mut hmap),
+        Result([
+            LetterState::Gray,
+            LetterState::Green,
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Gray
+        ])
+    );
+}
+
+#[test]
+fn test_get_result_botox_salto() {
+    let mut hmap = HashMap::new();
+    assert_eq!(
+        get_result(&String::from("botox"), "salto", &mut hmap),
+        Result([
+            LetterState::Gray,
+            LetterState::Yellow,
+            LetterState::Yellow,
+            LetterState::Gray,
+            LetterState::Gray
+        ])
+    );
+}
+
+#[test]
+fn test_get_result_ulula_valor() {
+    let mut hmap = HashMap::new();
+    assert_eq!(
+        get_result(&String::from("ulula"), "valor", &mut hmap),
+        Result([
+            LetterState::Gray,
+            LetterState::Yellow,
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Yellow
+        ])
+    );
+}
+
+#[test]
+fn test_is_possible_hucha_mucha() {
+    assert!(is_possible(
+        "hucha",
+        &Result([
+            LetterState::Gray,
+            LetterState::Green,
+            LetterState::Green,
+            LetterState::Green,
+            LetterState::Green
+        ]),
+        "mucha"
+    ));
+}
+
+#[test]
+fn test_is_possible_aureo_bureo() {
+    assert!(is_possible(
+        "aureo",
+        &Result([
+            LetterState::Gray,
+            LetterState::Green,
+            LetterState::Green,
+            LetterState::Green,
+            LetterState::Green
+        ]),
+        "bureo"
+    ));
+}
+
+#[test]
+fn test_is_possible_izaba_zureo() {
+    assert!(!is_possible(
+        "izaba",
+        &Result([
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Gray
+        ]),
+        "zureo"
+    ));
+}
+
+#[test]
+fn test_is_possible_gafea_salto() {
+    assert!(is_possible(
+        "gafea",
+        &Result([
+            LetterState::Gray,
+            LetterState::Green,
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Gray
+        ]),
+        "salto"
+    ));
+}
+
+#[test]
+fn test_is_possible_botox_salto() {
+    assert!(is_possible(
+        "botox",
+        &Result([
+            LetterState::Gray,
+            LetterState::Yellow,
+            LetterState::Yellow,
+            LetterState::Gray,
+            LetterState::Gray
+        ]),
+        "salto"
+    ));
+}
+
+#[test]
+fn test_is_possible_ulula_valor() {
+    assert!(is_possible(
+        "ulula",
+        &Result([
+            LetterState::Gray,
+            LetterState::Yellow,
+            LetterState::Gray,
+            LetterState::Gray,
+            LetterState::Yellow
+        ]),
+        "valor"
+    ));
+}