mirror of
https://github.com/rust-lang/rustlings.git
synced 2026-01-11 05:09:19 +00:00
Revert "finished more"
This reverts commit e83883dead5b76ce704b292256c2559bca670564.
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e0a2cbf8cd
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@ -1,9 +1,7 @@
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// functions1.rs
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// Make me compile! Execute `rustlings hint functions1` for hints :)
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fn call_me() -> i32 {
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1
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}
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// I AM NOT DONE
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fn main() {
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call_me();
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@ -1,11 +1,13 @@
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// functions2.rs
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// Make me compile! Execute `rustlings hint functions2` for hints :)
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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: i32) {
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fn call_me(num:) {
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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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@ -1,8 +1,10 @@
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// functions3.rs
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// Make me compile! Execute `rustlings hint functions3` for hints :)
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// I AM NOT DONE
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fn main() {
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call_me(5);
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call_me();
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}
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fn call_me(num: u32) {
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@ -4,12 +4,14 @@
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// This store is having a sale where if the price is an even number, you get
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// 10 Rustbucks off, but if it's an odd number, it's 3 Rustbucks off.
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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) -> i32 {
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fn sale_price(price: i32) -> {
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if is_even(price) {
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price - 10
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} else {
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@ -1,11 +1,13 @@
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// functions5.rs
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// Make me compile! Execute `rustlings hint functions5` for hints :)
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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 answer 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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@ -1,16 +1,13 @@
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// if1.rs
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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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// Execute `rustlings hint if1` for hints
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if (a > b) {
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a
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} else {
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b
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}
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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 the command `rustlings hint if2` if you want a hint :)
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// I AM NOT DONE
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pub fn fizz_if_foo(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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"baz"
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1
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}
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}
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@ -1,10 +1,12 @@
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// move_semantics1.rs
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// Make me compile! Execute `rustlings hint move_semantics1` for hints :)
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// I AM NOT DONE
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fn main() {
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let vec0 = Vec::new();
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let mut vec1 = fill_vec(vec0);
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let vec1 = fill_vec(vec0);
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println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
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@ -2,21 +2,27 @@
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// Make me compile without changing line 13 or moving line 10!
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// Execute `rustlings hint move_semantics2` for hints :)
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fn main() {
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let mut vec0 = Vec::new();
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// I AM NOT DONE
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fill_vec(&mut vec0);
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fn main() {
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let vec0 = Vec::new();
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let mut vec1 = fill_vec(vec0);
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// Do not change the following line!
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println!("{} has length {} content `{:?}`", "vec0", vec0.len(), vec0);
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vec0.push(88);
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vec1.push(88);
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println!("{} has length {} content `{:?}`", "vec1", vec0.len(), vec0);
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println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
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}
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fn fill_vec(vec: &mut Vec<i32>) -> () {
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fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
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let mut vec = vec;
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vec.push(22);
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vec.push(44);
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vec.push(66);
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vec
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}
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@ -3,6 +3,8 @@
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// (no lines with multiple semicolons necessary!)
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// Execute `rustlings hint move_semantics3` for hints :)
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// I AM NOT DONE
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fn main() {
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let vec0 = Vec::new();
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@ -15,7 +17,7 @@ fn main() {
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println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
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}
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fn fill_vec(mut vec: Vec<i32>) -> Vec<i32> {
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fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
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vec.push(22);
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vec.push(44);
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vec.push(66);
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@ -4,9 +4,12 @@
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// freshly created vector from fill_vec to its caller.
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// Execute `rustlings hint move_semantics4` for hints!
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fn main() {
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// I AM NOT DONE
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let mut vec1 = fill_vec();
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fn main() {
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let vec0 = Vec::new();
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let mut vec1 = fill_vec(vec0);
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println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
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@ -17,7 +20,7 @@ fn main() {
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// `fill_vec()` no longer takes `vec: Vec<i32>` as argument
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fn fill_vec() -> Vec<i32> {
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let mut vec = Vec::new();
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let mut vec = vec;
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vec.push(22);
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vec.push(44);
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@ -3,11 +3,13 @@
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// adding, changing or removing any of them.
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// Execute `rustlings hint move_semantics5` for hints :)
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// I AM NOT DONE
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fn main() {
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let mut x = 100;
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let y = &mut x;
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*y += 100;
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let z = &mut x;
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*y += 100;
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*z += 1000;
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assert_eq!(x, 1200);
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}
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@ -2,22 +2,24 @@
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// Make me compile! `rustlings hint move_semantics6` for hints
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// You can't change anything except adding or removing references
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// I AM NOT DONE
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fn main() {
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let data = "Rust is great!".to_string();
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get_char(&data);
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get_char(data);
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string_uppercase(data);
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string_uppercase(&data);
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}
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// Should not take ownership
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fn get_char(data: &String) -> char {
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fn get_char(data: String) -> char {
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data.chars().last().unwrap()
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}
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// Should take ownership
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fn string_uppercase(mut data: String) {
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data = data.to_uppercase();
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fn string_uppercase(mut data: &String) {
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data = &data.to_uppercase();
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println!("{}", data);
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}
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@ -8,12 +8,10 @@
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// more than 40 at once, each apple only costs 1! Write a function that calculates
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// the price of an order of apples given the quantity bought. No hints this time!
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// Put your function here!
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fn calculate_apple_price(number_of_apples: u32) -> u32 {
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let price = if number_of_apples <= 40 {2} else {1};
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// I AM NOT DONE
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number_of_apples * price
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}
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// Put your function here!
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// fn calculate_apple_price {
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// Don't modify this function!
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#[test]
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