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41 lines
805 B
41 lines
805 B
4 years ago
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## searching
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### Instructions
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In this exercise you will have to complete the function `search`.
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this function receives an array and a key of `i32`, then it will return the position
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of the given key in the array.
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### Notions
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- https://doc.rust-lang.org/book/ch18-00-patterns.html
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### Expected functions
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```rust
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fn search(array: &[i32], key: i32) -> Option<usize> {}
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```
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### Usage
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Here is a program to test your function.
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```rust
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fn main() {
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let ar = [1, 3, 4, 6, 8, 9, 11];
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let f = search(&ar, 6);
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println!(
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"the element 6 is in the position {:?} in the array {:?}",
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f, ar
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);
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}
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```
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And its output
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```console
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student@ubuntu:~/[[ROOT]]/test$ cargo run
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the element 6 is in the position Some(3) in the array [1, 3, 4, 6, 8, 9, 11]
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student@ubuntu:~/[[ROOT]]/test$
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```
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