From 80f0a220391347af5c606041d2f5656d1aff3ec5 Mon Sep 17 00:00:00 2001 From: Kirovj <546108612@qq.com> Date: Wed, 19 Jan 2022 15:16:59 +0800 Subject: [PATCH] finish some --- exercises/functions/functions1.rs | 4 +++- exercises/functions/functions2.rs | 3 +-- exercises/functions/functions3.rs | 3 +-- exercises/functions/functions4.rs | 4 +--- exercises/functions/functions5.rs | 3 +-- exercises/if/if1.rs | 5 ++++- exercises/if/if2.rs | 7 ++++--- exercises/move_semantics/move_semantics1.rs | 3 +-- exercises/move_semantics/move_semantics2.rs | 10 ++++------ exercises/move_semantics/move_semantics3.rs | 9 ++++----- exercises/move_semantics/move_semantics4.rs | 6 ++---- exercises/move_semantics/move_semantics5.rs | 3 +-- exercises/primitive_types/primitive_types1.rs | 3 +-- exercises/primitive_types/primitive_types2.rs | 3 +-- exercises/primitive_types/primitive_types3.rs | 3 +-- exercises/primitive_types/primitive_types4.rs | 3 +-- exercises/primitive_types/primitive_types5.rs | 3 +-- exercises/primitive_types/primitive_types6.rs | 3 +-- exercises/quiz1.rs | 10 ++++++++-- exercises/structs/structs1.rs | 15 ++++++--------- exercises/structs/structs2.rs | 11 +++++++++-- exercises/variables/variables1.rs | 3 +-- exercises/variables/variables2.rs | 3 +-- exercises/variables/variables3.rs | 3 +-- exercises/variables/variables4.rs | 3 +-- exercises/variables/variables5.rs | 3 +-- exercises/variables/variables6.rs | 3 +-- 27 files changed, 62 insertions(+), 70 deletions(-) diff --git a/exercises/functions/functions1.rs b/exercises/functions/functions1.rs index 31125278..5e7e3ee9 100644 --- a/exercises/functions/functions1.rs +++ b/exercises/functions/functions1.rs @@ -1,7 +1,9 @@ // functions1.rs // Make me compile! Execute `rustlings hint functions1` for hints :) -// I AM NOT DONE + +fn call_me(){ +} fn main() { call_me(); diff --git a/exercises/functions/functions2.rs b/exercises/functions/functions2.rs index 5721a172..115a08db 100644 --- a/exercises/functions/functions2.rs +++ b/exercises/functions/functions2.rs @@ -1,13 +1,12 @@ // functions2.rs // Make me compile! Execute `rustlings hint functions2` for hints :) -// I AM NOT DONE fn main() { call_me(3); } -fn call_me(num:) { +fn call_me(num: usize) { for i in 0..num { println!("Ring! Call number {}", i + 1); } diff --git a/exercises/functions/functions3.rs b/exercises/functions/functions3.rs index ed5f839f..c01dbec6 100644 --- a/exercises/functions/functions3.rs +++ b/exercises/functions/functions3.rs @@ -1,10 +1,9 @@ // functions3.rs // Make me compile! Execute `rustlings hint functions3` for hints :) -// I AM NOT DONE fn main() { - call_me(); + call_me(5); } fn call_me(num: u32) { diff --git a/exercises/functions/functions4.rs b/exercises/functions/functions4.rs index 58637e4c..b6af7c4b 100644 --- a/exercises/functions/functions4.rs +++ b/exercises/functions/functions4.rs @@ -4,14 +4,12 @@ // This store is having a sale where if the price is an even number, you get // 10 Rustbucks off, but if it's an odd number, it's 3 Rustbucks off. -// 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 d22aa6c8..ee79e792 100644 --- a/exercises/functions/functions5.rs +++ b/exercises/functions/functions5.rs @@ -1,7 +1,6 @@ // functions5.rs // Make me compile! Execute `rustlings hint functions5` for hints :) -// I AM NOT DONE fn main() { let answer = square(3); @@ -9,5 +8,5 @@ fn main() { } fn square(num: i32) -> i32 { - num * num; + num * num } diff --git a/exercises/if/if1.rs b/exercises/if/if1.rs index 90867545..1f69b46d 100644 --- a/exercises/if/if1.rs +++ b/exercises/if/if1.rs @@ -1,6 +1,5 @@ // if1.rs -// I AM NOT DONE pub fn bigger(a: i32, b: i32) -> i32 { // Complete this function to return the bigger number! @@ -8,6 +7,10 @@ pub fn bigger(a: i32, b: i32) -> i32 { // - another function call // - additional variables // Execute `rustlings hint if1` for hints + if a > b { + return a; + } + return b; } // Don't mind this for now :) diff --git a/exercises/if/if2.rs b/exercises/if/if2.rs index 80effbdf..eef98307 100644 --- a/exercises/if/if2.rs +++ b/exercises/if/if2.rs @@ -4,13 +4,14 @@ // Step 2: Get the bar_for_fuzz and default_to_baz tests passing! // Execute the command `rustlings hint if2` if you want a hint :) -// I AM NOT DONE pub fn fizz_if_foo(fizzish: &str) -> &str { if fizzish == "fizz" { "foo" - } else { - 1 + } else if fizzish == "fuzz" { + "bar" + }else{ + "baz" } } diff --git a/exercises/move_semantics/move_semantics1.rs b/exercises/move_semantics/move_semantics1.rs index e2f5876d..78e4f8aa 100644 --- a/exercises/move_semantics/move_semantics1.rs +++ b/exercises/move_semantics/move_semantics1.rs @@ -1,12 +1,11 @@ // move_semantics1.rs // Make me compile! Execute `rustlings hint move_semantics1` for hints :) -// I AM NOT DONE fn main() { let vec0 = Vec::new(); - let vec1 = fill_vec(vec0); + let mut vec1 = fill_vec(vec0); println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1); diff --git a/exercises/move_semantics/move_semantics2.rs b/exercises/move_semantics/move_semantics2.rs index bd21fbb7..da8d2686 100644 --- a/exercises/move_semantics/move_semantics2.rs +++ b/exercises/move_semantics/move_semantics2.rs @@ -2,12 +2,11 @@ // Make me compile without changing line 13! // Execute `rustlings hint move_semantics2` for hints :) -// I AM NOT DONE fn main() { - let vec0 = Vec::new(); + let mut vec0 = Vec::new(); - let mut vec1 = fill_vec(vec0); + let mut vec1 = fill_vec(&mut vec0); // Do not change the following line! println!("{} has length {} content `{:?}`", "vec0", vec0.len(), vec0); @@ -17,12 +16,11 @@ fn main() { println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1); } -fn fill_vec(vec: Vec) -> Vec { - let mut vec = vec; +fn fill_vec(vec: &mut Vec) -> Vec { vec.push(22); vec.push(44); vec.push(66); - vec + vec.to_vec() } diff --git a/exercises/move_semantics/move_semantics3.rs b/exercises/move_semantics/move_semantics3.rs index 43fef74f..ecc8f1bd 100644 --- a/exercises/move_semantics/move_semantics3.rs +++ b/exercises/move_semantics/move_semantics3.rs @@ -3,12 +3,11 @@ // (no lines with multiple semicolons necessary!) // Execute `rustlings hint move_semantics3` for hints :) -// I AM NOT DONE fn main() { - let vec0 = Vec::new(); + let mut vec0 = Vec::new(); - let mut vec1 = fill_vec(vec0); + let mut vec1 = fill_vec(&mut vec0); println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1); @@ -17,10 +16,10 @@ fn main() { println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1); } -fn fill_vec(vec: Vec) -> Vec { +fn fill_vec(vec: &mut Vec) -> Vec { vec.push(22); vec.push(44); vec.push(66); - vec + vec.to_vec() } diff --git a/exercises/move_semantics/move_semantics4.rs b/exercises/move_semantics/move_semantics4.rs index 2a23c710..e7aafed2 100644 --- a/exercises/move_semantics/move_semantics4.rs +++ b/exercises/move_semantics/move_semantics4.rs @@ -4,12 +4,10 @@ // freshly created vector from fill_vec to its caller. // Execute `rustlings hint move_semantics4` for hints! -// I AM NOT DONE fn main() { - let vec0 = Vec::new(); - let mut vec1 = fill_vec(vec0); + let mut vec1 = fill_vec(); println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1); @@ -20,7 +18,7 @@ fn main() { // `fill_vec()` no longer takes `vec: Vec` as argument fn fill_vec() -> Vec { - let mut vec = vec; + let mut vec = Vec::new(); vec.push(22); vec.push(44); diff --git a/exercises/move_semantics/move_semantics5.rs b/exercises/move_semantics/move_semantics5.rs index 1afe16c5..076078ac 100644 --- a/exercises/move_semantics/move_semantics5.rs +++ b/exercises/move_semantics/move_semantics5.rs @@ -3,13 +3,12 @@ // adding, changing or removing any of them. // Execute `rustlings hint move_semantics5` for hints :) -// I AM NOT DONE fn main() { let mut x = 100; let y = &mut x; - let z = &mut x; *y += 100; + let z = y; *z += 1000; assert_eq!(x, 1200); } diff --git a/exercises/primitive_types/primitive_types1.rs b/exercises/primitive_types/primitive_types1.rs index 09121392..53330d37 100644 --- a/exercises/primitive_types/primitive_types1.rs +++ b/exercises/primitive_types/primitive_types1.rs @@ -2,7 +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 +11,7 @@ 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 6576a4d5..c0dc520a 100644 --- a/exercises/primitive_types/primitive_types2.rs +++ b/exercises/primitive_types/primitive_types2.rs @@ -2,7 +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`) @@ -16,7 +15,7 @@ fn main() { println!("Neither alphabetic nor numeric!"); } - let // Finish this line like the example! What's your favorite character? + let your_character = '我'; // 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() { diff --git a/exercises/primitive_types/primitive_types3.rs b/exercises/primitive_types/primitive_types3.rs index aaa518be..1a04fa70 100644 --- a/exercises/primitive_types/primitive_types3.rs +++ b/exercises/primitive_types/primitive_types3.rs @@ -2,10 +2,9 @@ // Create an array with at least 100 elements in it where the ??? is. // Execute `rustlings hint primitive_types3` for hints! -// I AM NOT DONE fn main() { - let a = ??? + let a = vec![0;200]; 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 10b553e9..df54dff0 100644 --- a/exercises/primitive_types/primitive_types4.rs +++ b/exercises/primitive_types/primitive_types4.rs @@ -2,13 +2,12 @@ // Get a slice out of Array a where the ??? is so that the test passes. // Execute `rustlings hint primitive_types4` for hints!! -// 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..4]; assert_eq!([2, 3, 4], nice_slice) } diff --git a/exercises/primitive_types/primitive_types5.rs b/exercises/primitive_types/primitive_types5.rs index 680d8d23..9358d7ee 100644 --- a/exercises/primitive_types/primitive_types5.rs +++ b/exercises/primitive_types/primitive_types5.rs @@ -2,11 +2,10 @@ // Destructure the `cat` tuple so that the println will work. // Execute `rustlings hint primitive_types5` for hints! -// 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 b8c9b82b..86b52692 100644 --- a/exercises/primitive_types/primitive_types6.rs +++ b/exercises/primitive_types/primitive_types6.rs @@ -3,13 +3,12 @@ // You can put the expression for the second element where ??? is so that the test passes. // Execute `rustlings hint primitive_types6` for hints! -// 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!") diff --git a/exercises/quiz1.rs b/exercises/quiz1.rs index b13b9284..e575476e 100644 --- a/exercises/quiz1.rs +++ b/exercises/quiz1.rs @@ -7,10 +7,16 @@ // more than 40 at once, each apple only costs 1! 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_apple_price { +fn calculate_apple_price(num: usize) -> usize { + let prize = if num > 40 { + 1 + } else { + 2 + }; + num * prize +} // Don't modify this function! #[test] diff --git a/exercises/structs/structs1.rs b/exercises/structs/structs1.rs index 6d0b2f49..907d618c 100644 --- a/exercises/structs/structs1.rs +++ b/exercises/structs/structs1.rs @@ -1,13 +1,13 @@ // structs1.rs // Address all the TODOs to make the tests pass! -// I AM NOT DONE struct ColorClassicStruct { - // TODO: Something goes here + name: String, + hex: String, } -struct ColorTupleStruct(/* TODO: Something goes here */); +struct ColorTupleStruct(String, String); #[derive(Debug)] struct UnitStruct; @@ -18,8 +18,7 @@ mod tests { #[test] fn classic_c_structs() { - // TODO: Instantiate a classic c struct! - // let green = + let green = ColorClassicStruct{name: String::from("green"), hex: String::from("#00FF00")}; assert_eq!(green.name, "green"); assert_eq!(green.hex, "#00FF00"); @@ -27,8 +26,7 @@ mod tests { #[test] fn tuple_structs() { - // TODO: Instantiate a tuple struct! - // let green = + let green = ColorTupleStruct(String::from("green"), String::from("#00FF00")); assert_eq!(green.0, "green"); assert_eq!(green.1, "#00FF00"); @@ -36,8 +34,7 @@ mod tests { #[test] fn unit_structs() { - // TODO: Instantiate a unit struct! - // let unit_struct = + let unit_struct = UnitStruct; let message = format!("{:?}s are fun!", unit_struct); assert_eq!(message, "UnitStructs are fun!"); diff --git a/exercises/structs/structs2.rs b/exercises/structs/structs2.rs index f9c6427d..ea5917d8 100644 --- a/exercises/structs/structs2.rs +++ b/exercises/structs/structs2.rs @@ -1,7 +1,6 @@ // structs2.rs // Address all the TODOs to make the tests pass! -// I AM NOT DONE #[derive(Debug)] struct Order { @@ -34,7 +33,15 @@ mod tests { fn your_order() { let order_template = create_order_template(); // TODO: Create your own order using the update syntax and template above! - // let your_order = + let your_order = Order { + name: String::from("Hacker in Rust"), + year: order_template.year, + made_by_phone: order_template.made_by_phone, + made_by_mobile: order_template.made_by_mobile, + made_by_email: order_template.made_by_email, + item_number: order_template.item_number, + count: 1, + }; assert_eq!(your_order.name, "Hacker in Rust"); assert_eq!(your_order.year, order_template.year); assert_eq!(your_order.made_by_phone, order_template.made_by_phone); diff --git a/exercises/variables/variables1.rs b/exercises/variables/variables1.rs index 4a3af73c..149d5ce8 100644 --- a/exercises/variables/variables1.rs +++ b/exercises/variables/variables1.rs @@ -6,9 +6,8 @@ // even after you already figured it out. If you got everything working and // feel ready for the next exercise, remove the `I AM NOT DONE` comment below. -// 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 7774a8fb..60afda6e 100644 --- a/exercises/variables/variables2.rs +++ b/exercises/variables/variables2.rs @@ -1,10 +1,9 @@ // variables2.rs // Make me compile! Execute the command `rustlings hint variables2` if you want a hint :) -// I AM NOT DONE fn main() { - let x; + let x: i8 = 10; if x == 10 { println!("Ten!"); } else { diff --git a/exercises/variables/variables3.rs b/exercises/variables/variables3.rs index 30ec48ff..3566ef22 100644 --- a/exercises/variables/variables3.rs +++ b/exercises/variables/variables3.rs @@ -1,10 +1,9 @@ // variables3.rs // Make me compile! Execute the command `rustlings hint variables3` if you want 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/variables4.rs b/exercises/variables/variables4.rs index 77f1e9ab..6a2fa7b4 100644 --- a/exercises/variables/variables4.rs +++ b/exercises/variables/variables4.rs @@ -1,9 +1,8 @@ // variables4.rs // Make me compile! Execute the command `rustlings hint variables4` if you want a hint :) -// I AM NOT DONE fn main() { - let x: i32; + let x: i32 = 3; println!("Number {}", x); } diff --git a/exercises/variables/variables5.rs b/exercises/variables/variables5.rs index 175eebb3..d61e6c1b 100644 --- a/exercises/variables/variables5.rs +++ b/exercises/variables/variables5.rs @@ -1,11 +1,10 @@ // variables5.rs // Make me compile! Execute the command `rustlings hint variables5` if you want a hint :) -// I AM NOT DONE fn main() { let number = "T-H-R-E-E"; // don't change this line println!("Spell a Number : {}", number); - number = 3; + let number = 3; println!("Number plus two is : {}", number + 2); } diff --git a/exercises/variables/variables6.rs b/exercises/variables/variables6.rs index 98666914..71d2b4d9 100644 --- a/exercises/variables/variables6.rs +++ b/exercises/variables/variables6.rs @@ -1,9 +1,8 @@ // variables6.rs // Make me compile! Execute the command `rustlings hint variables6` if you want a hint :) -// I AM NOT DONE -const NUMBER = 3; +const NUMBER: usize = 3; fn main() { println!("Number {}", NUMBER); }