1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

/*!
TopK algorithm implementation in Rust.

This crate currently provides the [Filtered Space-Saving algorithm](https://doi.org/10.1016/j.ins.2010.08.024).

Version numbers follow the [semver](https://semver.org/) convention.

### Example

```rust
let mut topk = FilteredSpaceSaving::new(3);
topk.insert("1", 10);
topk.insert("2", 20);
topk.insert("3", 1);
topk.insert("4", 2);
let topk_result = topk.into_sorted_vec();
assert_eq!(topk_result.len(), 3);
assert_eq!(topk_result[0].0, "2");
```

merging space-saving results is supported:

```rust
let mut fss1 = FilteredSpaceSaving::new(3);
fss1.insert("1", 10);
fss1.insert("2", 20);
fss1.insert("3", 2);
fss1.insert("4", 1);
fss1.insert("4", 3);
fss1.insert("5", 3);
let mut fss2 = FilteredSpaceSaving::new(3);
fss2.insert("1", 10);
fss2.insert("2", 20);
fss2.insert("3", 20);
fss2.insert("4", 10);
fss1.merge(&fss2).unwrap();
let result = fss1.into_sorted_vec();
assert_eq!(result[0].0, "2");
```
 */

mod topk;

pub use self::topk::*;