add initial data

aoc07/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "aoc07"
+version = "0.1.0"

aoc07/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "aoc07"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

aoc07/src/main.rs

@@ -0,0 +1,36 @@
+fn main() {
+    let data = vec![16,1,2,0,4,2,7,1,2,14];
+    let (fuel, position) = optimise(&data);
+    println!("fuel: {}, position: {}", fuel, position);
+}
+
+fn fuel_for_pos(data: &Vec<i32>, position: i32) -> i32 {
+    let mut result = 0;
+    for item in data {
+        result += (item - position).abs();
+    }
+    return result
+}
+
+fn get_min(vec: &Vec<i32>) -> i32 {
+    return vec.iter().min().unwrap().to_owned();
+}
+
+fn get_max(vec: &Vec<i32>) -> i32 {
+    return vec.iter().max().unwrap().to_owned();
+}
+
+fn optimise(data: &Vec<i32>) -> (i32, i32) {
+    let mut positions: Vec<i32> = Vec::new();
+    let mut fuel: Vec<i32> = Vec::new();
+    for i in get_min(&data)..get_max(&data) {
+        positions.push(i);
+        fuel.push(fuel_for_pos(&data, i));
+    }
+    let min = get_min(&fuel);
+    let index = fuel.iter().position(|&val| val == min).unwrap();
+    return (min, index as i32)
+
+
+
+}