formatting and fixing of examples

subjects/bigger/README.md

@@ -4,6 +4,10 @@
 
 Create the function `bigger` that gets the biggest positive number in the `HashMap`.
 
+### Notions
+
+[hash maps](https://doc.rust-lang.org/book/ch08-03-hash-maps.html)
+
 ### Expected Function
 
 ```rust
@@ -16,9 +20,11 @@ pub fn bigger(h: HashMap<&str, i32>) -> i32 {
 Here is a program to test your function.
 
 ```rust
+use std::collections::HashMap;
 use bigger::bigger;
+
 fn main() {
-    
+
     let mut hash = HashMap::new();
     hash.insert("Daniel", 122);
     hash.insert("Ashley", 333);

subjects/collect/README.md

@@ -2,12 +2,12 @@
 
 ### Instructions
 
-Implement the function bubble_sort which receives a vector Vec<i32> and return the same vector but in increasing order using the bubble sort algorithm
+Implement the **function** `bubble_sort` which receives a vector Vec<i32> and returns the same vector but in increasing order using the bubble sort algorithm.
 
 ### Expected Function
 
 ```rust
-fn bubble_sort(vec: &mut Vec<i32>) {
+pub fn bubble_sort(vec: &mut Vec<i32>) {
 }
 ```
 
@@ -16,6 +16,8 @@ fn bubble_sort(vec: &mut Vec<i32>) {
 Here is a program to test your function.
 
 ```rust
+use collect::*;
+
 fn main() {
 	let ref mut v = vec![3, 2, 4, 5, 1, 7];
 	let mut b = v.clone();
@@ -27,7 +29,7 @@ fn main() {
 }
 ```
 
-And its output
+And its output:
 
 ```console
 student@ubuntu:~/[[ROOT]]/test$ cargo run

subjects/simple_hash/README.md

@@ -2,9 +2,9 @@
 
 ### Instructions
 
-Create the function `contain` that checks a `HashMap` to see if it contains the given key.
+Create a **function** `contain` that checks a `HashMap` to see if it contains a given key.
 
-Create the function `remove` that removes a given key from the `HashMap`.
+Create a **function** `remove` that removes a given key from the `HashMap`.
 
 ### Notions
 
@@ -23,7 +23,7 @@ pub fn remove(h: &mut HashMap<&str, i32>, s: &str) {}
 Here is a program to test your function.
 
 ```rust
-use simple_hash::simple_hash;
+use simple_hash::*;
 use std::collections::HashMap;
 
 fn main() {
@@ -35,16 +35,16 @@ fn main() {
 
     println!(
         "Does the HashMap contains the name Roman? => {}",
-        contain(&hash, "Roman")
+        contain(hash.clone(), "Roman")
     );
     println!(
         "Does the HashMap contains the name Katie? => {}",
-        contain(&hash, "Katie")
+        contain(hash.clone(), "Katie")
     );
-    println!("Removing Robert {:?}", remove(&mut hash, "Robert"));
+    println!("Removing Robert {:?}", remove(hash.clone(), "Robert"));
     println!(
         "Does the HashMap contains the name Robert? => {}",
-        contain(&hash, "Robert")
+        contain(hash.clone(), "Robert")
     );
     println!("Hash {:?}", hash);
 }