algorithmz/array/
remove_duplicates.rs

1/// Remove duplicate elements from an array, preserving order.
2///
3/// Takes a list reference and returns a `Vec<i32>` or an error explaining the situation.
4///
5/// # Examples
6///
7/// Basic usage:
8/// ```
9/// let result = algorithmz::array::remove_duplicates(&[1,1,2,3,3,4,4,5]).unwrap();
10/// assert_eq!(result, [1,2,3,4,5]);
11/// ```
12///
13/// Match example:
14/// ```
15/// use algorithmz::array::remove_duplicates;
16/// match remove_duplicates(&[1,1,2,3,3,4,5,5,9]) {
17///     Ok(n) => println!("The result was: {:?}",n),
18///     Err(e) => eprintln!("The error was: {}",e),
19/// }
20/// ```
21pub fn remove_duplicates(list: &[i32]) -> Result<Vec<i32>, String> {
22    if list.is_empty() {
23        return Err("Cannot remove duplicates from an empty list.".to_string());
24    }
25    let mut result: Vec<i32> = Vec::new();
26    let mut seen: Vec<i32> = Vec::new();
27    for item in list {
28        if !seen.contains(item) {
29            seen.push(*item);
30            result.push(*item);
31        }
32    }
33    Ok(result)
34}
35
algorithmz/array/remove_duplicates.rs

algorithmz/array/
remove_duplicates.rs
