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finish vectors

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This commit is contained in:
Reality Enjoyer
2026-01-13 06:50:55 +00:00
parent 7d1d94fbc5
commit 8095e5d271
6 changed files with 173 additions and 105 deletions
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6
friends/Cargo.toml Normal file
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@@ -0,0 +1,6 @@
[package]
name = "vectors"
version = "0.1.0"
edition = "2024"
[dependencies]

88
friends/src/main.rs Normal file
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@@ -0,0 +1,88 @@
use std::io;
fn main() {
let mut friends: Vec<String> = Vec::new();
friends = init_list();
println!("you're friends with {:?}", friends);
println!("1. update\n2. quit");
let mut choice = String::new();
io::stdin()
.read_line(&mut choice)
.expect("failed to read line!");
let choice: u32 = match choice.trim().parse() {
Ok(num) => num,
Err(_) => {
todo!();
}
};
if choice == 1 {
update_list(&mut friends);
println!("updated friends list {:?}", friends);
} else {
return;
}
}
fn update_list(friends: &mut Vec<String>) {
println!("\t...your friends as of now are: {:?}", friends);
println!("...which one would you like to update?");
let mut index = String::new();
io::stdin()
.read_line(&mut index)
.expect("failed to read line!");
let index: usize = match index.trim().parse() {
Ok(num) => num,
Err(_) => {
todo!();
}
};
println!("...and you would like to replace them with: ");
let mut to_update_with = String::new();
io::stdin()
.read_line(&mut to_update_with)
.expect("failed to read line!");
friends[index - 1] = to_update_with;
}
fn init_list() -> Vec<String> {
println!("how many friends do you have?");
let mut friend_count = String::new();
io::stdin()
.read_line(&mut friend_count)
.expect("failed to read line!");
let friend_count: u32 = match friend_count.trim().parse() {
Ok(num) => num,
Err(_) => {
todo!();
}
};
let mut names = Vec::new();
for i in 0..friend_count {
println!("\tenter name of friend {}", i + 1);
let mut name = String::new();
io::stdin()
.read_line(&mut name)
.expect("failed to read line!");
names.push(name);
}
names
}

1
picasso/src/main.rs
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@@ -56,6 +56,7 @@ fn main() {
print_result(&result);
}
fn compare(r1: &Rectangle, r2: &Rectangle, r3: &Rectangle) -> [bool; 6] {
let mut result: [bool; 6] = [false; 6];

4
slot-machine/src/main.rs
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@@ -13,6 +13,9 @@ fn main() {
print_rules();
let tries = manage_balance(load_money());
if tries == 0 {
return;
} else {
let mut total_payout: u32 = 0;
for _ in 0..tries {
@@ -42,6 +45,7 @@ fn main() {
}
}
println!("\nyou walk away with ${total_payout}");
}
}
fn spin() -> SpinResult {

4
variables/src/main.rs
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@@ -35,22 +35,20 @@ fn main() {
);
println!("\ncaroline replaced kyle");
employees[3] = "caroline";
println!("employees are: {:?}", employees);
employee_of_the_month = (months[1], employees[1], ratings[2]);
let (x, y, z) = employee_of_the_month;
println!("\nin {x}, {y} was the employee of the month with a rating of {z}");
employee_of_the_month = (months[2], employees[2], ratings[1]);
let (x, y, z) = employee_of_the_month;
println!("\nin {x}, {y} was the employee of the month with a rating of {z}");
employee_of_the_month = (months[3], employees[3], ratings[0]);
let (x, y, z) = employee_of_the_month;
println!("\nin {x}, {y} was the employee of the month with a rating of {z}");
}

121
vectors/src/main.rs
View File

@@ -1,88 +1,59 @@
use std::io;
fn main() {
let mut friends: Vec<String> = Vec::new();
//empty vector must have a type
let mut v: Vec<i32> = Vec::new();
friends = init_list();
println!("you're friends with {:?}", friends);
println!("1. update\n2. quit");
//otherwise vectors infer types at the time of assignment
let mut v1 = vec!["john", "jack", "jacob"];
let mut choice = String::new();
v1.push("jill");
v.push(2);
io::stdin()
.read_line(&mut choice)
.expect("failed to read line!");
println!("{:?}, {:?}", v, v1);
let choice: u32 = match choice.trim().parse() {
Ok(num) => num,
Err(_) => {
todo!();
//reading from a vector
//using get and a simple reference
let fetch = &v[0];
let fetch1 = v1.get(2);
println!("{:?}, {:?}", fetch, fetch1);
//interating over vector values
for i in &v1 {
println!("\t{i}");
}
};
if choice == 1 {
update_list(&mut friends);
println!("updated friends list {:?}", friends);
} else {
return;
}
let mut v2 = vec![10, 20, 30];
let v2 = add_ten(&mut v2).clone();
println!("{:?}", v2);
using_enums();
}
fn update_list(friends: &mut Vec<String>) {
println!("\t...your friends as of now are: {:?}", friends);
println!("...which one would you like to update?");
let mut index = String::new();
io::stdin()
.read_line(&mut index)
.expect("failed to read line!");
let index: usize = match index.trim().parse() {
Ok(num) => num,
Err(_) => {
todo!();
fn add_ten(vec: &mut Vec<i32>) -> &Vec<i32> {
for i in &mut *vec {
*i += 10;
}
};
println!("...and you would like to replace them with: ");
let mut to_update_with = String::new();
io::stdin()
.read_line(&mut to_update_with)
.expect("failed to read line!");
friends[index - 1] = to_update_with;
vec
}
fn init_list() -> Vec<String> {
println!("how many friends do you have?");
let mut friend_count = String::new();
io::stdin()
.read_line(&mut friend_count)
.expect("failed to read line!");
let friend_count: u32 = match friend_count.trim().parse() {
Ok(num) => num,
Err(_) => {
todo!();
}
};
let mut names = Vec::new();
for i in 0..friend_count {
println!("\tenter name of friend {}", i + 1);
let mut name = String::new();
io::stdin()
.read_line(&mut name)
.expect("failed to read line!");
names.push(name);
}
names
#[derive(Debug)]
enum Groups {
Cities(String),
NumericCodes(i32),
}
fn using_enums() {
let japan = vec![
Groups::Cities(String::from("Tokyo")),
Groups::NumericCodes(1),
];
let china = vec![
Groups::Cities(String::from("Beijing")),
Groups::NumericCodes(2),
];
let places = vec![japan, china];
println!("{:?}", places);
}