day 1: part 1: rust

2024/days/01/part1/Cargo.toml

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+[package]
+name = "part1"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

2024/days/01/part1/src/main.rs

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+
+fn vec_minimum(vec: &Vec<u64>) -> (usize, u64) {
+    let mut m: u64 = u64::MAX;
+    let mut index: usize = 0;
+    for (i, value) in vec.iter().enumerate() {
+        if *value < m {
+            m = *value;
+            index = i;
+        }
+    }
+    (index, m)
+}
+
+fn vec_distance(nums1: Vec<u64>, nums2: Vec<u64>) -> u64 {
+    let mut nums1 = nums1.clone();
+    let mut nums2 = nums2.clone();
+    let mut distance: u64 = 0;
+    while nums1.len() > 0 {
+        let (idx1, min1) = vec_minimum(&nums1);
+        let (idx2, min2) = vec_minimum(&nums2);
+        let d = (min1 as i64 - min2 as i64).abs() as u64;
+        distance += d;
+        nums1.remove(idx1);
+        nums2.remove(idx2);
+    }
+    distance
+}
+
+fn main() -> std::io::Result<()> {
+    let mut nums1: Vec<u64> = Vec::new();
+    let mut nums2: Vec<u64> = Vec::new();
+    for line in std::io::stdin().lines() {
+        let line = line.unwrap();
+        if line == "" {
+            continue;
+        }
+        let mut parts = line.split("   ");
+        let num1 = parts.next().unwrap();
+        let num1: u64 = num1.parse().unwrap();
+        let num2 = parts.next().unwrap();
+        let num2: u64 = num2.parse().unwrap();
+        nums1.push(num1);
+        nums2.push(num2);
+    }
+    let distance = vec_distance(nums1, nums2);
+    println!("{}", distance);
+    Ok(())
+}