Ejercicios 23/94
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@ -1,7 +1,9 @@
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// functions1.rs
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// Execute `rustlings hint functions1` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn call_me() {
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}
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fn main() {
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call_me();
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@ -1,13 +1,11 @@
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// functions2.rs
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// Execute `rustlings hint functions2` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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call_me(3);
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}
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fn call_me(num:) {
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fn call_me(num:i32) {
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for i in 0..num {
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println!("Ring! Call number {}", i + 1);
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}
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@ -1,10 +1,8 @@
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// functions3.rs
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// Execute `rustlings hint functions3` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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call_me();
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call_me(10);
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}
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fn call_me(num: u32) {
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@ -7,14 +7,12 @@
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// in the signatures for now. If anything, this is a good way to peek ahead
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// to future exercises!)
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// I AM NOT DONE
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fn main() {
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let original_price = 51;
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println!("Your sale price is {}", sale_price(original_price));
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}
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fn sale_price(price: i32) -> {
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fn sale_price(price: u32) -> u32 {
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if is_even(price) {
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price - 10
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} else {
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@ -22,6 +20,6 @@ fn sale_price(price: i32) -> {
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}
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}
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fn is_even(num: i32) -> bool {
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fn is_even(num: u32) -> bool {
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num % 2 == 0
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}
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@ -1,13 +1,11 @@
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// functions5.rs
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// Execute `rustlings hint functions5` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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let answer = square(3);
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println!("The square of 3 is {}", answer);
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}
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fn square(num: i32) -> i32 {
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num * num;
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num * num
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}
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@ -1,13 +1,12 @@
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// if1.rs
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// Execute `rustlings hint if1` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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pub fn bigger(a: i32, b: i32) -> i32 {
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// Complete this function to return the bigger number!
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// Do not use:
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// - another function call
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// - additional variables
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if a >= b { a } else { b }
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}
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// Don't mind this for now :)
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@ -4,13 +4,13 @@
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// Step 2: Get the bar_for_fuzz and default_to_baz tests passing!
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// Execute `rustlings hint if2` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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pub fn foo_if_fizz(fizzish: &str) -> &str {
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if fizzish == "fizz" {
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"foo"
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} else if fizzish == "fuzz" {
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"bar"
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} else {
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1
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"baz"
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}
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}
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@ -9,8 +9,6 @@
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// when you change one of the lines below! Try adding a `println!` line, or try changing
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// what it outputs in your terminal. Try removing a semicolon and see what happens!
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// I AM NOT DONE
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fn main() {
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println!("Hello and");
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println!(r#" welcome to... "#);
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@ -2,8 +2,6 @@
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// Make the code print a greeting to the world.
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// Execute `rustlings hint intro2` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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println!("Hello {}!");
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println!("Hello {}!", "perro");
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}
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@ -2,8 +2,6 @@
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// Fill in the rest of the line that has code missing!
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// No hints, there's no tricks, just get used to typing these :)
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// I AM NOT DONE
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fn main() {
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// Booleans (`bool`)
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@ -12,7 +10,7 @@ fn main() {
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println!("Good morning!");
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}
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let // Finish the rest of this line like the example! Or make it be false!
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let is_evening = false; // Finish the rest of this line like the example! Or make it be false!
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if is_evening {
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println!("Good evening!");
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}
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@ -2,8 +2,6 @@
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// Fill in the rest of the line that has code missing!
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// No hints, there's no tricks, just get used to typing these :)
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// I AM NOT DONE
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fn main() {
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// Characters (`char`)
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println!("Neither alphabetic nor numeric!");
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}
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let // Finish this line like the example! What's your favorite character?
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let your_character = 'p'; // Finish this line like the example! What's your favorite character?
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// Try a letter, try a number, try a special character, try a character
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// from a different language than your own, try an emoji!
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if your_character.is_alphabetic() {
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@ -2,10 +2,8 @@
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// Create an array with at least 100 elements in it where the ??? is.
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// Execute `rustlings hint primitive_types3` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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let a = ???
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let a = ["Multiplicado cien veces"; 100];
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if a.len() >= 100 {
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println!("Wow, that's a big array!");
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@ -2,13 +2,11 @@
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// Get a slice out of Array a where the ??? is so that the test passes.
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// Execute `rustlings hint primitive_types4` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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#[test]
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fn slice_out_of_array() {
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let a = [1, 2, 3, 4, 5];
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let nice_slice = ???
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let nice_slice = &a[1..4];
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assert_eq!([2, 3, 4], nice_slice)
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}
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@ -2,11 +2,9 @@
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// Destructure the `cat` tuple so that the println will work.
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// Execute `rustlings hint primitive_types5` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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let cat = ("Furry McFurson", 3.5);
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let /* your pattern here */ = cat;
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let (name, age) = cat;
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println!("{} is {} years old.", name, age);
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}
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// You can put the expression for the second element where ??? is so that the test passes.
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// Execute `rustlings hint primitive_types6` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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#[test]
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fn indexing_tuple() {
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let numbers = (1, 2, 3);
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// Replace below ??? with the tuple indexing syntax.
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let second = ???;
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let second = numbers.1;
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assert_eq!(2, second,
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"This is not the 2nd number in the tuple!")
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// Write a function that calculates the price of an order of apples given
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// the quantity bought. No hints this time!
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// I AM NOT DONE
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// Put your function here!
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// fn calculate_price_of_apples {
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fn calculate_price_of_apples(apples:u32) -> u32 {
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if apples > 40 {
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apples * 1
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} else {
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apples * 2
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}
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}
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// Don't modify this function!
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#[test]
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// Make me compile!
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// Execute `rustlings hint variables1` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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x = 5;
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let x = 5;
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println!("x has the value {}", x);
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}
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// variables2.rs
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// Execute `rustlings hint variables2` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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let x;
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let x = 10;
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if x == 10 {
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println!("x is ten!");
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} else {
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// variables3.rs
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// Execute `rustlings hint variables3` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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let x: i32;
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let x: i32 = 0;
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println!("Number {}", x);
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}
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// variables4.rs
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// Execute `rustlings hint variables4` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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let x = 3;
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let mut x = 3;
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println!("Number {}", x);
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x = 5; // don't change this line
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println!("Number {}", x);
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// variables5.rs
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// Execute `rustlings hint variables5` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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let number = "T-H-R-E-E"; // don't change this line
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println!("Spell a Number : {}", number);
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number = 3; // don't rename this variable
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println!("Number plus two is : {}", number + 2);
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{
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let number = 3; // don't rename this variable
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println!("Number plus two is : {}", number + 2);
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}
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}
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// variables6.rs
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// Execute `rustlings hint variables6` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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const NUMBER = 3;
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const NUMBER:i32 = 3;
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fn main() {
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println!("Number {}", NUMBER);
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}
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