Fix rust_impl

rust_impl/Cargo.lock

@@ -1,11 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-[[package]]
+version = 3
-name = "RunLengthEncoding"
-version = "0.1.0"
-dependencies = [
- "structopt",
-]
 
 [[package]]
 name = "ansi_term"
@@ -120,6 +115,13 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "run_length_encoding"
+version = "0.1.0"
+dependencies = [
+ "structopt",
+]
+
 [[package]]
 name = "strsim"
 version = "0.8.0"
@@ -128,9 +130,9 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "structopt"
-version = "0.3.21"
+version = "0.3.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5277acd7ee46e63e5168a80734c9f6ee81b1367a7d8772a2d765df2a3705d28c"
+checksum = "69b041cdcb67226aca307e6e7be44c8806423d83e018bd662360a93dabce4d71"
 dependencies = [
  "clap",
  "lazy_static",
@@ -139,9 +141,9 @@ dependencies = [
 
 [[package]]
 name = "structopt-derive"
-version = "0.4.14"
+version = "0.4.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ba9cdfda491b814720b6b06e0cac513d922fc407582032e8706e9f137976f90"
+checksum = "7813934aecf5f51a54775e00068c237de98489463968231a51746bbbc03f9c10"
 dependencies = [
  "heck",
  "proc-macro-error",

rust_impl/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "RunLengthEncoding"
+name = "run_length_encoding"
 version = "0.1.0"
 authors = ["Stephen Seo <seo.disparate@gmail.com>"]
 edition = "2018"
@@ -7,4 +7,4 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-structopt = "0.3.21"
+structopt = "0.3.22"

rust_impl/src/main.rs

@@ -1,5 +1,4 @@
 use structopt::StructOpt;
-use std::collections::HashMap;
 
 #[derive(StructOpt, Debug)]
 #[structopt(name = "RunLengthEncoding")]
@@ -10,13 +9,29 @@ struct Opts {
 fn main() {
     let opts = Opts::from_args();
 
-    let mut map: HashMap<char, u32> = HashMap::new();
+    let mut current: Option<char> = None;
-
+    let mut current_count: u32 = 0;
+    let mut list: Vec<(char, u32)> = Vec::new();
     for c in opts.input.chars() {
-        map.get_mut(&c).map(|v| *v += 1).or_else(|| {map.insert(c, 1); Some(())});
+        if c.is_ascii_whitespace() {
+            continue;
+        } else {
+            if current.is_none() || current.unwrap() != c {
+                if current_count > 0 {
+                    list.push((current.unwrap(), current_count));
+                }
+                current_count = 1;
+                current = Some(c);
+            } else {
+                current_count += 1;
+            }
+        }
+    }
+    if current_count > 0 && current.is_some() { 
+        list.push((current.unwrap(), current_count));
     }
 
-    for (c, value) in map {
+    for (c, count) in list {
-        println!("{} with value {}", c, value);
+        println!("{}: has count of {}", c, count);
     }
 }