part one and twoHEADmaster

1 files changed, 129 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..f7896a5
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,129 @@
+use std::fs;
+
+fn main() {
+    let f = fs::read_to_string("input2").unwrap();
+    let mut nums_vec: Vec<u32> = vec![];    
+
+    // part one
+    for line in f.lines() {
+        let mut first = 0;
+        let mut second = 0;
+
+        // part two
+        // convert words to numbers
+        let nline = replace(line);
+        // println!("replaced:{}", nline);
+
+        // Read first int
+        for c in nline.chars() {
+            first = get_num(&c);
+            if first != 0 {
+                break
+            }
+        }
+
+        // Read the second int
+        let chars = nline.chars().rev();
+        for c in chars {
+            second = get_num(&c);
+            if second != 0 {
+                break
+            }
+        }
+
+        if first == 0 || second == 0 {
+            println!("{}:{}", first, second);
+            panic!();
+        }
+
+        let num = (first * 10) + second;
+        // println!("result:{}\n", num);
+        nums_vec.push(num);
+    }
+
+    // println!("{:?}", nums_vec);
+
+    let mut final_num = 0;
+    for num in nums_vec {
+        final_num += num
+    }
+
+    println!("{}", final_num);
+}
+
+fn replace(s: &str) -> String {
+    let wordmap: Vec<(&str, &str)> = vec![
+        ("one", "1"), 
+        ("two", "2"),
+        ("three", "3"),
+        ("four", "4"),
+        ("five", "5"),
+        ("six", "6"),
+        ("seven", "7"),
+        ("eight", "8"),
+        ("nine", "9")
+    ];
+
+    // println!("{}", s);
+    let mut s = s.to_string().clone();
+
+    //first
+    let mut nstring = "".to_string();
+    let mut len = 0;
+    for _ in s.chars() {
+        len += 1;
+    }
+
+    'main: for cidx in 0..len {
+        let temp = s.split_at(cidx);
+
+        // skip if a number is first
+        for c in temp.0.chars() {
+            if get_num(&c) > 0 {
+                break 'main
+            }
+        }
+
+        for word in &wordmap {
+            let replace = temp.0.replace(word.0, word.1);
+
+            if replace != temp.0 {
+                nstring = replace.to_string() + temp.1;
+                break 'main;
+            }
+        }
+        nstring = s.clone();
+    }
+    s = nstring.clone();
+
+    // println!("{}", s);
+
+    //second
+    let mut len = 0;
+    for _ in s.chars() {
+        len += 1;
+    }
+
+    'main: for cidx in (0..len).rev() {
+        let temp = s.split_at(cidx);
+
+        for word in &wordmap {
+            let replace = temp.1.replace(word.0, word.1);
+
+            if replace != temp.1 {
+                nstring = temp.0.to_string() + &replace;
+                break 'main;
+            }
+        }
+        nstring = s.clone();
+    }
+
+    nstring
+}
+
+fn get_num(c: &char) -> u32 {
+    match c.to_digit(10) {
+        Some(n) => n,
+        None => 0,
+    }
+}