Решение на упр.02 задача 4 от Йоанна Ненкова

Обратно към всички решения

Към профила на Йоанна Ненкова

Код

// a)

fn sum_slice(arr: &[i32]) -> i32 {

let mut sum = 0;

for a in arr {

sum += a;

}

sum

}

fn main() {

let a: [i32; 5] = [1, 2, 3, 4, 5];

let s_full: &[i32] = &a;

let s_part: &[i32] = &a[1..4];

println!("Сума на целия масив: {}", sum_slice(s_full));

println!("Сума на частичен срез: {}", sum_slice(s_part));

let v = vec![10, 20, 30];

println!("Сума на вектор: {}", sum_slice(&v));

}

// b)

// поддържа се автоматично преобразуване от едното в другото

// c)

// няма да се компилира, защото очакваме slice (&[i32]), а получаваме число (&i32)

Лог от изпълнението

Updating crates.io index
     Locking 17 packages to latest compatible versions
   Compiling proc-macro2 v1.0.102
   Compiling quote v1.0.41
   Compiling unicode-ident v1.0.20
   Compiling futures-core v0.3.31
   Compiling futures-sink v0.3.31
   Compiling futures-channel v0.3.31
   Compiling pin-project-lite v0.2.16
   Compiling pin-utils v0.1.0
   Compiling futures-task v0.3.31
   Compiling syn v2.0.108
   Compiling slab v0.4.11
   Compiling memchr v2.7.6
   Compiling futures-io v0.3.31
   Compiling solution v0.1.0 (/tmp/d20251023-1757769-werkxk/solution)
warning: function `sum_slice` is never used
 --> src/lib.rs:2:4
  |
2 | fn sum_slice(arr: &[i32]) -> i32 {
  |    ^^^^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: function `main` is never used
  --> src/lib.rs:10:4
   |
10 | fn main() {
   |    ^^^^

warning: `solution` (lib) generated 2 warnings
   Compiling futures-macro v0.3.31
   Compiling futures-util v0.3.31
   Compiling futures-executor v0.3.31
   Compiling futures v0.3.31
warning: function `main` is never used
  --> tests/../src/lib.rs:10:4
   |
10 | fn main() {
   |    ^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: `solution` (test "solution_test") generated 1 warning
    Finished `test` profile [unoptimized + debuginfo] target(s) in 8.42s
     Running tests/solution_test.rs (target/debug/deps/solution_test-fc1324dc0157cdc7)

running 1 test
test solution_test::test_basic ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

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