dedupe and improve

src/day_1.rs

@@ -1,27 +1,19 @@
+fn elf_calorie_counts(input: &String) -> Vec<u64> {
+    input.split("\n\n").map(|elf| {
+        elf.split_whitespace().map(|meal| meal.parse().unwrap_or(0)).sum()
+    }).collect()
+}
+
 pub fn part_1(input: &String) -> u64 {
-    let elves: Vec<&str> = input.split("\n\n").collect();
+    let mut elf_calorie_counts= elf_calorie_counts(input);
 
-    let mut highest_calorie_count: u64 = 0;
+    elf_calorie_counts.sort_unstable();
 
-    for meals in elves.iter() {
+    elf_calorie_counts.pop().unwrap()
-        let mut elf_calorie_count= 0;
-
-        for meal in meals.split_whitespace() {
-            elf_calorie_count += meal.parse().unwrap_or(0);
-        }
-
-        if elf_calorie_count > highest_calorie_count {
-            highest_calorie_count = elf_calorie_count;
-        }
-    }
-
-    highest_calorie_count
 }
 
 pub fn part_2(input: &String) -> u64 {
-    let mut elf_calorie_counts: Vec<u64> = input.split("\n\n").map(|elf| {
+    let mut elf_calorie_counts= elf_calorie_counts(input);
-        elf.split_whitespace().map(|meal| meal.parse().unwrap_or(0)).sum()
-    }).collect();
 
     elf_calorie_counts.sort_unstable();
     elf_calorie_counts.reverse();