diff --git a/2022/rust/src/day6.rs b/2022/rust/src/day6.rs
index 59dcb32..91a7dec 100644
--- a/2022/rust/src/day6.rs
+++ b/2022/rust/src/day6.rs
@@ -2,11 +2,14 @@ mod common;
 
 use std::collections::HashSet;
 
-type Input = str;
+type Input = Vec<char>;
 type Result = usize;
 
-fn part1(input: &Input) -> Result {
-    let c: Vec<char> = input.chars().collect();
+fn processed_input(input: &str) -> Vec<char> {
+    input.chars().collect()
+}
+
+fn part1(c: &Input) -> Result {
     for i in 3.. {
         if c[i] != c[i - 1]
             && c[i] != c[i - 2]
@@ -22,8 +25,7 @@ fn part1(input: &Input) -> Result {
     0
 }
 
-fn part2(input: &Input) -> Result {
-    let c: Vec<char> = input.chars().collect();
+fn part2(c: &Input) -> Result {
     for i in 13..c.len() {
         let mut s: HashSet<char> = HashSet::new();
         for j in i - 13..=i {
@@ -39,7 +41,8 @@ fn part2(input: &Input) -> Result {
 
 fn main() {
     let input_text = common::day_input(6);
-    common::show_answers(&part1(&input_text), &part2(&input_text))
+    let input = processed_input(&input_text);
+    common::show_answers(&part1(&input), &part2(&input))
 }
 
 #[cfg(test)]
@@ -50,8 +53,9 @@ mod tests {
 
     #[test]
     fn test() {
-        let input = TEST_INPUT;
-        assert_eq!(part1(input), 7);
-        assert_eq!(part2(input), 19);
+        let input_text = TEST_INPUT;
+        let input = processed_input(&input_text);
+        assert_eq!(part1(&input), 7);
+        assert_eq!(part2(&input), 19);
     }
 }