From b563dcbb180762b26dab924d3f23bb0376fee2cb Mon Sep 17 00:00:00 2001
From: dece <shgck@pistache.land>
Date: Sun, 7 Nov 2021 15:51:58 +0100
Subject: [PATCH] 2015 day 5

---
 2015/src/bin/day5.rs | 59 ++++++++++++++++++++++++++++++++++++++++++++
 prepare.py           |  2 +-
 2 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 2015/src/bin/day5.rs

diff --git a/2015/src/bin/day5.rs b/2015/src/bin/day5.rs
new file mode 100644
index 0000000..2eac906
--- /dev/null
+++ b/2015/src/bin/day5.rs
@@ -0,0 +1,59 @@
+use aoc::input;
+
+fn main() {
+    let lines = input::read_lines();
+
+    // Part 1
+    let mut goods = 0;
+    let bad_pairs = vec!("ab", "cd", "pq", "xy");
+    for line in &lines {
+        let mut has_bad_pair = false;
+        for p in &bad_pairs {
+            if line.contains(p) { has_bad_pair = true; break }
+        }
+        if has_bad_pair { continue }
+        let mut num_vowels = 0;
+        let mut cc = ' ';
+        let mut has_doubled = false;
+        for c in line.chars() {
+            if "aeiou".contains(c) { num_vowels += 1 }
+            if c == cc { has_doubled = true }
+            cc = c;
+        }
+        if num_vowels < 3 { continue }
+        if !has_doubled { continue }
+        goods += 1;
+    }
+    println!("Good strings: {}", goods);
+
+    // Part 2
+    goods = 0;
+    for line in &lines {
+        let mut cond1 = false;
+        let chars: Vec<char> = line.chars().collect();
+        for i in 0..(chars.len() - 2) {
+            let c1 = chars[i];
+            let c2 = chars[i + 1];
+            for j in (i + 2)..(chars.len() - 1) {
+                if chars[j] == c1 && chars[j + 1] == c2 {
+                    cond1 = true;
+                    break
+                }
+            }
+            if cond1 { break }
+        }
+        if !cond1 { continue }
+        
+        let mut cond2 = false;
+        let mut cm2 = ' ';
+        let mut cm1 = ' ';
+        for c in line.chars() {
+            if c == cm2 { cond2 = true }
+            cm2 = cm1;
+            cm1 = c;
+        }
+        if !cond2 { continue }
+        goods += 1;
+    }
+    println!("Best strings: {}", goods);
+}
diff --git a/prepare.py b/prepare.py
index 4f7a5b0..43abfe9 100644
--- a/prepare.py
+++ b/prepare.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import argparse
 import os
 import shutil
@@ -25,7 +26,6 @@ def main():
     input_text = fetch(input_url)
     create_files(input_text, args.day, args.year, args.lang)
     webbrowser.open_new_tab(day_url)
-    webbrowser.open_new_tab(input_url)
 
 def fetch(input_url):
     response = requests.get(input_url, cookies={"session": SESSION_ID})