From 78e5f6f969085d9422764ea2ab5cab8af8549d87 Mon Sep 17 00:00:00 2001
From: Manuel Riquelme <clonbg@gmail.com>
Date: Tue, 30 May 2023 13:20:33 +0200
Subject: [PATCH] mapeo

---
 README.md         |  3 +-
 mapeo/Cargo.toml  |  8 +++++
 mapeo/src/main.rs | 77 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 87 insertions(+), 1 deletion(-)
 create mode 100644 mapeo/Cargo.toml
 create mode 100644 mapeo/src/main.rs

diff --git a/README.md b/README.md
index 282c081..03fe75b 100644
--- a/README.md
+++ b/README.md
@@ -4,4 +4,5 @@ https://tinchicus.com/2022/09/26/rust-listado-del-curso-inicial/
 - https://tinchicus.com/2022/06/03/rust-strings/ (cadenas)
 - https://tinchicus.com/2022/06/06/rust-arrays/ (arreglos)
 - https://tinchicus.com/2022/06/07/rust-vector/ (vectores)
-- https://tinchicus.com/2022/06/08/rust-tuple/ (tupla)
\ No newline at end of file
+- https://tinchicus.com/2022/06/08/rust-tuple/ (tupla)
+- https://tinchicus.com/2022/06/09/rust-hash-map/ (mapeo)
\ No newline at end of file
diff --git a/mapeo/Cargo.toml b/mapeo/Cargo.toml
new file mode 100644
index 0000000..7de16a8
--- /dev/null
+++ b/mapeo/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "mapeo"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/mapeo/src/main.rs b/mapeo/src/main.rs
new file mode 100644
index 0000000..0c36cc9
--- /dev/null
+++ b/mapeo/src/main.rs
@@ -0,0 +1,77 @@
+use std::collections::HashMap;
+
+fn main() {
+    println!("-- Ejercicio 1");
+    let mut mapa = HashMap::new();
+
+    mapa.insert('A', 10);
+    mapa.insert('B', 20);
+
+    let idx = 'A';
+    let mapeo = mapa.get(&idx);
+    println!("{:?}", mapeo);
+
+    println!("-- Ejercicio 2");
+
+    let mut mapa = HashMap::new();
+
+    mapa.insert(String::from("primero"), 10);
+    mapa.insert(String::from("segundo"), 20);
+
+    let idx = String::from("primero");
+    let mapeo = mapa.get(&idx);
+    println!("{:?}", mapeo);
+
+    println!("-- Ejercicio 3");
+
+    let mut mapa = HashMap::new();
+
+    mapa.insert(String::from("primero"), 10);
+    mapa.insert(String::from("segundo"), 20);
+
+    for (clave, valor) in &mapa {
+        println!("{}: {}", clave, valor);
+    }
+
+    println!("-- Ejercicio 4");
+
+    let mut mapa = HashMap::new();
+
+    mapa.insert(String::from("primero"), 10);
+    mapa.insert(String::from("segundo"), 20);
+
+    mapa.insert(String::from("primero"), 30);
+
+    for (clave, valor) in &mapa {
+        println!("{}: {}", clave, valor);
+    }
+
+    println!("-- Ejercicio 5");
+
+    let mut mapa = HashMap::new();
+
+    mapa.insert(String::from("primero"), 10);
+    mapa.insert(String::from("segundo"), 20);
+
+    mapa.entry(String::from("primero")).or_insert(30);
+    mapa.entry(String::from("tercero")).or_insert(40);
+
+    for (clave, valor) in &mapa {
+        println!("{}: {}", clave, valor);
+    }
+
+    println!("-- Ejercicio 6");
+
+    let texto = "hola mundo maravilloso mundo";
+
+    let mut mapa = HashMap::new();
+
+    for palabra in texto.split_whitespace() {
+        let contar = mapa.entry(palabra).or_insert(0);
+        *contar += 1;
+    }
+
+    for (clave, valor) in &mapa {
+        println!("{}: {}", clave, valor);
+    }
+}