From edb9161f9aa6704a852e7b40732bb14610f100ef Mon Sep 17 00:00:00 2001 From: Jake Larson Date: Mon, 24 Apr 2023 19:55:00 +0000 Subject: [PATCH] Initial work towards solving exercises --- exercises/functions/functions1.rs | 4 ++-- exercises/functions/functions2.rs | 4 +--- exercises/functions/functions3.rs | 4 +--- exercises/functions/functions4.rs | 4 +--- exercises/functions/functions5.rs | 4 +--- exercises/if/if1.rs | 7 +++++-- exercises/if/if2.rs | 6 +++--- exercises/intro/intro1.rs | 2 -- exercises/intro/intro2.rs | 4 +--- exercises/primitive_types/primitive_types1.rs | 4 +--- exercises/primitive_types/primitive_types2.rs | 8 +++----- exercises/primitive_types/primitive_types3.rs | 8 +++++--- exercises/primitive_types/primitive_types4.rs | 5 +---- exercises/primitive_types/primitive_types5.rs | 4 +--- exercises/primitive_types/primitive_types6.rs | 7 ++----- exercises/quiz1.rs | 10 +++++++--- exercises/variables/variables1.rs | 4 +--- exercises/variables/variables2.rs | 4 +--- exercises/variables/variables3.rs | 4 +--- exercises/variables/variables4.rs | 4 +--- exercises/variables/variables5.rs | 4 +--- exercises/variables/variables6.rs | 4 +--- exercises/vecs/vecs1.rs | 4 +--- rustlings | 1 + 24 files changed, 43 insertions(+), 71 deletions(-) create mode 160000 rustlings diff --git a/exercises/functions/functions1.rs b/exercises/functions/functions1.rs index 03d8af70..bf24085e 100644 --- a/exercises/functions/functions1.rs +++ b/exercises/functions/functions1.rs @@ -1,8 +1,8 @@ // functions1.rs // Execute `rustlings hint functions1` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { call_me(); } + +fn call_me() {} diff --git a/exercises/functions/functions2.rs b/exercises/functions/functions2.rs index 7d40a578..5a51bdfb 100644 --- a/exercises/functions/functions2.rs +++ b/exercises/functions/functions2.rs @@ -1,13 +1,11 @@ // functions2.rs // Execute `rustlings hint functions2` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { call_me(3); } -fn call_me(num:) { +fn call_me(num: i32) { for i in 0..num { println!("Ring! Call number {}", i + 1); } diff --git a/exercises/functions/functions3.rs b/exercises/functions/functions3.rs index 3b9e585b..f1281eca 100644 --- a/exercises/functions/functions3.rs +++ b/exercises/functions/functions3.rs @@ -1,10 +1,8 @@ // functions3.rs // Execute `rustlings hint functions3` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { - call_me(); + call_me(3); } fn call_me(num: u32) { diff --git a/exercises/functions/functions4.rs b/exercises/functions/functions4.rs index 65d5be4f..40677fc9 100644 --- a/exercises/functions/functions4.rs +++ b/exercises/functions/functions4.rs @@ -7,14 +7,12 @@ // in the signatures for now. If anything, this is a good way to peek ahead // to future exercises!) -// I AM NOT DONE - fn main() { let original_price = 51; println!("Your sale price is {}", sale_price(original_price)); } -fn sale_price(price: i32) -> { +fn sale_price(price: i32) -> i32 { if is_even(price) { price - 10 } else { diff --git a/exercises/functions/functions5.rs b/exercises/functions/functions5.rs index 5d762961..ee8210ab 100644 --- a/exercises/functions/functions5.rs +++ b/exercises/functions/functions5.rs @@ -1,13 +1,11 @@ // functions5.rs // Execute `rustlings hint functions5` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { let answer = square(3); println!("The square of 3 is {}", answer); } fn square(num: i32) -> i32 { - num * num; + num * num } diff --git a/exercises/if/if1.rs b/exercises/if/if1.rs index 587e03f8..660a093c 100644 --- a/exercises/if/if1.rs +++ b/exercises/if/if1.rs @@ -1,13 +1,16 @@ // if1.rs // Execute `rustlings hint if1` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - pub fn bigger(a: i32, b: i32) -> i32 { // Complete this function to return the bigger number! // Do not use: // - another function call // - additional variables + if a > b { + a + } else { + b + } } // Don't mind this for now :) diff --git a/exercises/if/if2.rs b/exercises/if/if2.rs index effddbb6..129a4a25 100644 --- a/exercises/if/if2.rs +++ b/exercises/if/if2.rs @@ -4,13 +4,13 @@ // Step 2: Get the bar_for_fuzz and default_to_baz tests passing! // Execute `rustlings hint if2` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - pub fn foo_if_fizz(fizzish: &str) -> &str { if fizzish == "fizz" { "foo" + } else if fizzish == "fuzz" { + "bar" } else { - 1 + "baz" } } diff --git a/exercises/intro/intro1.rs b/exercises/intro/intro1.rs index cfc55c30..54889778 100644 --- a/exercises/intro/intro1.rs +++ b/exercises/intro/intro1.rs @@ -9,8 +9,6 @@ // when you change one of the lines below! Try adding a `println!` line, or try changing // what it outputs in your terminal. Try removing a semicolon and see what happens! -// I AM NOT DONE - fn main() { println!("Hello and"); println!(r#" welcome to... "#); diff --git a/exercises/intro/intro2.rs b/exercises/intro/intro2.rs index efc1af20..3f8f2494 100644 --- a/exercises/intro/intro2.rs +++ b/exercises/intro/intro2.rs @@ -2,8 +2,6 @@ // Make the code print a greeting to the world. // Execute `rustlings hint intro2` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { - println!("Hello {}!"); + println!("Hello {}!", "World!"); } diff --git a/exercises/primitive_types/primitive_types1.rs b/exercises/primitive_types/primitive_types1.rs index 09121392..91734c69 100644 --- a/exercises/primitive_types/primitive_types1.rs +++ b/exercises/primitive_types/primitive_types1.rs @@ -2,8 +2,6 @@ // Fill in the rest of the line that has code missing! // No hints, there's no tricks, just get used to typing these :) -// I AM NOT DONE - fn main() { // Booleans (`bool`) @@ -12,7 +10,7 @@ fn main() { println!("Good morning!"); } - let // Finish the rest of this line like the example! Or make it be false! + let is_evening = false; // Finish the rest of this line like the example! Or make it be false! if is_evening { println!("Good evening!"); } diff --git a/exercises/primitive_types/primitive_types2.rs b/exercises/primitive_types/primitive_types2.rs index 8730baab..bc875bd8 100644 --- a/exercises/primitive_types/primitive_types2.rs +++ b/exercises/primitive_types/primitive_types2.rs @@ -2,8 +2,6 @@ // Fill in the rest of the line that has code missing! // No hints, there's no tricks, just get used to typing these :) -// I AM NOT DONE - fn main() { // Characters (`char`) @@ -18,9 +16,9 @@ fn main() { println!("Neither alphabetic nor numeric!"); } - let // Finish this line like the example! What's your favorite character? - // Try a letter, try a number, try a special character, try a character - // from a different language than your own, try an emoji! + let your_character = 'B'; // Finish this line like the example! What's your favorite character? + // Try a letter, try a number, try a special character, try a character + // from a different language than your own, try an emoji! if your_character.is_alphabetic() { println!("Alphabetical!"); } else if your_character.is_numeric() { diff --git a/exercises/primitive_types/primitive_types3.rs b/exercises/primitive_types/primitive_types3.rs index fa7d019a..251cab7a 100644 --- a/exercises/primitive_types/primitive_types3.rs +++ b/exercises/primitive_types/primitive_types3.rs @@ -2,10 +2,12 @@ // Create an array with at least 100 elements in it where the ??? is. // Execute `rustlings hint primitive_types3` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { - let a = ??? + let a = vec![]; + + for 0..100 in a { + a.push(1); + } if a.len() >= 100 { println!("Wow, that's a big array!"); diff --git a/exercises/primitive_types/primitive_types4.rs b/exercises/primitive_types/primitive_types4.rs index 71fa243c..ff7995c4 100644 --- a/exercises/primitive_types/primitive_types4.rs +++ b/exercises/primitive_types/primitive_types4.rs @@ -2,13 +2,10 @@ // Get a slice out of Array a where the ??? is so that the test passes. // Execute `rustlings hint primitive_types4` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - #[test] fn slice_out_of_array() { let a = [1, 2, 3, 4, 5]; - - let nice_slice = ??? + let nice_slice = &a[1..=3]; assert_eq!([2, 3, 4], nice_slice) } diff --git a/exercises/primitive_types/primitive_types5.rs b/exercises/primitive_types/primitive_types5.rs index 4fd9141f..5cba3c15 100644 --- a/exercises/primitive_types/primitive_types5.rs +++ b/exercises/primitive_types/primitive_types5.rs @@ -2,11 +2,9 @@ // Destructure the `cat` tuple so that the println will work. // Execute `rustlings hint primitive_types5` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { let cat = ("Furry McFurson", 3.5); - let /* your pattern here */ = cat; + let (name, age) = cat; println!("{} is {} years old.", name, age); } diff --git a/exercises/primitive_types/primitive_types6.rs b/exercises/primitive_types/primitive_types6.rs index ddf8b423..4d614e57 100644 --- a/exercises/primitive_types/primitive_types6.rs +++ b/exercises/primitive_types/primitive_types6.rs @@ -3,14 +3,11 @@ // You can put the expression for the second element where ??? is so that the test passes. // Execute `rustlings hint primitive_types6` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - #[test] fn indexing_tuple() { let numbers = (1, 2, 3); // Replace below ??? with the tuple indexing syntax. - let second = ???; + let second = numbers.1; - assert_eq!(2, second, - "This is not the 2nd number in the tuple!") + assert_eq!(2, second, "This is not the 2nd number in the tuple!") } diff --git a/exercises/quiz1.rs b/exercises/quiz1.rs index dbb5cdc9..378d5fdc 100644 --- a/exercises/quiz1.rs +++ b/exercises/quiz1.rs @@ -10,10 +10,14 @@ // Write a function that calculates the price of an order of apples given // the quantity bought. No hints this time! -// I AM NOT DONE - // Put your function here! -// fn calculate_price_of_apples { +fn calculate_price_of_apples(num_apples: i32) -> i32 { + if num_apples <= 40 { + num_apples * 2 + } else { + num_apples + } +} // Don't modify this function! #[test] diff --git a/exercises/variables/variables1.rs b/exercises/variables/variables1.rs index f4d182ac..84de9fdc 100644 --- a/exercises/variables/variables1.rs +++ b/exercises/variables/variables1.rs @@ -2,9 +2,7 @@ // Make me compile! // Execute `rustlings hint variables1` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { - x = 5; + let x = 5; println!("x has the value {}", x); } diff --git a/exercises/variables/variables2.rs b/exercises/variables/variables2.rs index 641aeb8e..1002504f 100644 --- a/exercises/variables/variables2.rs +++ b/exercises/variables/variables2.rs @@ -1,10 +1,8 @@ // variables2.rs // Execute `rustlings hint variables2` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { - let x; + let x: i32 = 10; if x == 10 { println!("x is ten!"); } else { diff --git a/exercises/variables/variables3.rs b/exercises/variables/variables3.rs index 819b1bc7..c6bc4c79 100644 --- a/exercises/variables/variables3.rs +++ b/exercises/variables/variables3.rs @@ -1,9 +1,7 @@ // variables3.rs // Execute `rustlings hint variables3` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { - let x: i32; + let x: i32 = 4; println!("Number {}", x); } diff --git a/exercises/variables/variables4.rs b/exercises/variables/variables4.rs index 54491b0a..8c2ddd6d 100644 --- a/exercises/variables/variables4.rs +++ b/exercises/variables/variables4.rs @@ -1,10 +1,8 @@ // variables4.rs // Execute `rustlings hint variables4` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { - let x = 3; + let mut x = 3; println!("Number {}", x); x = 5; // don't change this line println!("Number {}", x); diff --git a/exercises/variables/variables5.rs b/exercises/variables/variables5.rs index 0e670d2a..9c337052 100644 --- a/exercises/variables/variables5.rs +++ b/exercises/variables/variables5.rs @@ -1,10 +1,8 @@ // variables5.rs // Execute `rustlings hint variables5` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn main() { - let number = "T-H-R-E-E"; // don't change this line + let mut number = 3; // don't change this line println!("Spell a Number : {}", number); number = 3; // don't rename this variable println!("Number plus two is : {}", number + 2); diff --git a/exercises/variables/variables6.rs b/exercises/variables/variables6.rs index a8520122..e8314b28 100644 --- a/exercises/variables/variables6.rs +++ b/exercises/variables/variables6.rs @@ -1,9 +1,7 @@ // variables6.rs // Execute `rustlings hint variables6` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - -const NUMBER = 3; +const NUMBER: i32 = 3; fn main() { println!("Number {}", NUMBER); } diff --git a/exercises/vecs/vecs1.rs b/exercises/vecs/vecs1.rs index 4e8c4cbb..9c448fa8 100644 --- a/exercises/vecs/vecs1.rs +++ b/exercises/vecs/vecs1.rs @@ -4,11 +4,9 @@ // Make me compile and pass the test! // Execute `rustlings hint vecs1` or use the `hint` watch subcommand for a hint. -// I AM NOT DONE - fn array_and_vec() -> ([i32; 4], Vec) { let a = [10, 20, 30, 40]; // a plain array - let v = // TODO: declare your vector here with the macro for vectors + let v = vec![10, 20, 30, 40]; (a, v) } diff --git a/rustlings b/rustlings new file mode 160000 index 00000000..7f1754ec --- /dev/null +++ b/rustlings @@ -0,0 +1 @@ +Subproject commit 7f1754ecc5690f31db4aff38eef2bf30e2aec525