Finished a few more

2016/day06/src/main.rs

@@ -0,0 +1,99 @@
+use std::io::Read;
+use std::fs::File;
+//use std::collections::HashMap;
+
+fn part_1(input: &String) {
+    // This would have been great if it actually worked.
+    // let values = input.lines()
+    //     .map(|l| l
+    //         .trim()
+    //         .chars()
+    //         .collect::<Vec<_>>()
+    //         )
+    //     .collect::<Vec<_>>();
+    // println!("first item {:?}", values[0]);
+    // println!("second item {:?}", values[1]);
+
+    // //let mut letters: Vec<String> = vec![String::new(); values[0].len()];
+    // let mut letters: Vec<Vec<char>> = vec![vec![]; values[0].len()];
+    // for v in values {
+    //     for (idx, l) in v.iter().enumerate() {
+    //         letters[idx].push(*l);
+    //     }
+    // }
+    // for (idx, line) in letters.iter().enumerate() {
+    //     //println!("Letter {}: {:?}", idx, s);
+    //     let mut hash: HashMap<char, i32> = HashMap::new();
+    //     let mut largest: (char, i32) = ('a', -1);
+    //     for l in line {
+    //         match hash.get(l) {
+    //             Some(v) => {
+    //                 v = &(v + 1);
+    //                 // if v > largest.1 {
+    //                 //     largest = (l, v);
+    //                 // }
+    //             },
+    //             None => hash.insert(*l, 1),
+    //         }
+    //     }
+
+    //     //let s: String = l.iter().cloned().collect();
+    // }
+
+    let size = input.lines().nth(0).unwrap().len();
+    print!("Part 1: Answer ");
+    for idx in 0..size {
+        let mut accumulator = [0; 26];
+        for line in input.lines() {
+            let letter = line.chars().nth(idx).unwrap();
+            let letter_idx = letter as u8 - 'a' as u8;
+            accumulator[letter_idx as usize] = accumulator[letter_idx as usize] + 1;
+            //println!("The {}th letter is {} with a value {} - {:?}", idx, letter, letter_idx, accumulator);
+        }
+        let mut biggest = (0, -1); //idx and value
+        for idx in 0..accumulator.len() {
+            if accumulator[idx] > biggest.1 {
+                biggest = (idx, accumulator[idx]);
+            }
+        }
+        let biggest_letter = (biggest.0 as u8 + 'a' as u8) as char;
+        // println!("Accumulator is {:?}", accumulator);
+        // println!("Biggest is {:?} which is {}", biggest, biggest_letter);
+        print!("{}", biggest_letter);
+    }
+    println!(""); //newline
+}
+
+fn part_2(input: &String) {
+    let size = input.lines().nth(0).unwrap().len();
+    print!("Part 2: Answer ");
+    for idx in 0..size {
+        let mut accumulator = [0; 26];
+        for line in input.lines() {
+            let letter = line.chars().nth(idx).unwrap();
+            let letter_idx = letter as u8 - 'a' as u8;
+            accumulator[letter_idx as usize] = accumulator[letter_idx as usize] + 1;
+            //println!("The {}th letter is {} with a value {} - {:?}", idx, letter, letter_idx, accumulator);
+        }
+        let mut smallest = (0, <i32>::max_value()); //idx and value
+        for idx in 0..accumulator.len() {
+            if accumulator[idx] > 0 && accumulator[idx] < smallest.1 {
+                smallest = (idx, accumulator[idx]);
+            }
+        }
+        let smallest_letter = (smallest.0 as u8 + 'a' as u8) as char;
+        // println!("Accumulator is {:?}", accumulator);
+        // println!("Smallest is {:?} which is {}", smallest, smallest_letter);
+        print!("{}", smallest_letter);
+    }
+    println!(""); //newline
+}
+
+fn main() {
+    let mut file = File::open("./data").expect("could not open file");
+    let mut input = String::new();
+    file.read_to_string(&mut input).expect("could not read file");
+
+    part_1(&input);
+    part_2(&input);
+}