Add the subject for the exercise `display_table`

subjects/display_table/README.md

@@ -22,10 +22,10 @@ impl fmt::Display for Table {
 }
 
 impl Table {
-	fn new() -> Table {
+	pub fn new() -> Table {
 	}
 
-	fn add_row(&mut self, row: &[String]) {
+	pub fn add_row(&mut self, row: &[String]) {
 	}
 }
 ```

subjects/filter_table/README.md

@@ -0,0 +1,85 @@
+## filter_table
+
+### Instructions
+
+- Define the functions:
+
+  - new: creates a new empty table.
+
+  - add_rows: adds a new row to the table from a slice of strings.
+  
+  - filter_cols: that receives a closure that receives a `&str` and returns a `bool` value:
+
+	- filter_cols returns a table with all the columns that yielded true when applied to the header.
+  
+  - filter_rows: that receives a closure that receives a `&str` and returns a `bool` value
+
+	- filter_rows returns a table with all the columns that yielded true when applied to the elements of the selected column.
+
+### Expected function
+
+```rust
+pub struct Table {
+	pub headers: Vec<String>,
+	pub body: Vec<Vec<String>>,
+}
+
+impl Table {
+	pub fn new() -> Table {
+	}
+
+	pub fn add_row(&mut self, row: &[String]) {
+	}
+
+	pub fn filter_col(&self, filter: ) -> Option<Self> {
+
+	}
+
+	pub fn filter_row(&self, col_name: &str, filter: ) -> Option<Self> {
+	}
+}
+```
+
+### Usage
+
+Here is a possible test for your function:
+
+```rust
+fn main() {
+	let mut table = Table::new();
+	table.headers = vec![
+		"Name".to_string(),
+		"Last Name".to_string(),
+		"ID Number".to_string(),
+	];
+	table.add_row(&[
+		"Adam".to_string(),
+		"Philips".to_string(),
+		"123456789".to_string(),
+	]);
+	table.add_row(&[
+		"Adamaris".to_string(),
+		"Shelby".to_string(),
+		"1111123456789".to_string(),
+	]);
+	table.add_row(&[
+		"Ackerley".to_string(),
+		"Philips".to_string(),
+		"123456789".to_string(),
+	]);
+	let filter_names = |col: &str| col == "Name";
+	println!("{:?}", table.filter_col(filter_names));
+
+	let filter_philips = |lastname: &str| lastname == "Philips";
+	println!("{:?}", table.filter_row("Last Name", filter_philips));
+}
+```
+
+And its output:
+
+```console
+student@ubuntu:~/[[ROOT]]/test$ cargo run
+Some(Table { headers: ["Name"], body: [["Adam"], ["Adamaris"], ["Ackerley"]] })
+Some(Table { headers: ["Name", "Last Name", "ID Number"], body: [["Adam", "Philips", "123456789"], ["Ackerley", "Philips", "123456789"]] })
+student@ubuntu:~/[[ROOT]]/test$
+```