This is a Rust implementation that calculates subset sum problem. It solves subset sum problem and returns a set of decomposed integers. It also can match corresponding numbers from two vectors and be used for Account reconciliation.
Binary files are provided on the Releases page. When you download one of these, please add it to your PATH manually.
First, you need to prepare a text file containing a set of integers like this
1
2
-3
4
5
and save it at any place.
Second, call subset_sum with the path of the text file and the target sum.
Call subset_sum.exe num_set.txt 3
The executable's name subset_sum.exe would be different from your choice. Change this example along with your environment.
In this example, the output is
[[2, 1], [4, -3, 2], [5, -3, 1]]
key.txt
3
5
7
targets.txt
1
5
-3
4
5
3
Call subset_sum.exe key.txt targets.txt
In this example, the output is
[([3], 3), ([5], 5), ([5, 4, -3, 1], 7)]
[([3], 3), ([4, 1], 5), ([5, 5, -3], 7)]
[([5, -3, 1], 3), ([5], 5), ([3, 4], 7)]
key.txt
1980
2980
3500
4000
1050
targets.txt
1950
2900
30
80
3300
200
3980
1050
20
Call subset_sum.exe key.txt targets.txt m2m
In this example, the output is
[([20, 30, 1050, 2900], [4000]), ([200, 3300], [3500]), ([80, 1950, 3980], [1050, 1980, 2980])]
[([20, 3980], [4000]), ([80, 2900], [2980]), ([30, 1950], [1980]), ([1050], [1050]), ([200, 3300], [3500])]
[([20, 3980], [4000]), ([80, 2900], [2980]), ([1050], [1050]), ([30, 1950], [1980]), ([200, 3300], [3500])]
[([20, 3980], [4000]), ([200, 3300], [3500]), ([80, 2900], [2980]), ([1050], [1050]), ([30, 1950], [1980])]
[([30, 1950], [1980]), ([80, 2900], [2980]), ([20, 3980], [4000]), ([200, 3300], [3500]), ([1050], [1050])]
[([30, 1950], [1980]), ([80, 2900], [2980]), ([200, 3300], [3500]), ([20, 3980], [4000]), ([1050], [1050])]
[([30, 1950], [1980]), ([80, 2900], [2980]), ([1050], [1050]), ([20, 3980], [4000]), ([200, 3300], [3500])]
[([80, 2900], [2980]), ([20, 3980], [4000]), ([1050], [1050]), ([200, 3300], [3500]), ([30, 1950], [1980])]
[([80, 2900], [2980]), ([1050], [1050]), ([30, 1950], [1980]), ([20, 3980], [4000]), ([200, 3300], [3500])]
[([200, 3300], [3500]), ([20, 30, 1050, 2900], [4000]), ([80, 1950, 3980], [1050, 1980, 2980])]
[([200, 3300], [3500]), ([20, 3980], [4000]), ([80, 2900], [2980]), ([30, 1950], [1980]), ([1050], [1050])]
[([1050], [1050]), ([30, 1950], [1980]), ([20, 3980], [4000]), ([80, 2900], [2980]), ([200, 3300], [3500])]
There are a lot of combinations!
Cargo.toml
[dependencies]
subset_sum = "(version)"
Example
subset_sum = "0.8.0"
main.rs
```rust
use subsetsum::dp::findsubset;
fn main() {
let result = find_subset(&mut vec![1, 2, 3, 4, 5], 6);
println!("{:?}", result);
}
Output
[[3, 2, 1], [4, 2], [5, 1]]
```
main.rs
```rust
use subsetsum::dp::sequencematcher;
fn main() {
let result = sequence_matcher(&mut vec![3, 5, 7], &mut vec![1, 5, -3, 4, 5, 3]);
println!("{:?}", result);
}
Output
[
[([3], 3), ([5], 5), ([5, 4, -3, 1], 7)]
[([3], 3), ([4, 1], 5), ([5, 5, -3], 7)]
[([5, -3, 1], 3), ([5], 5), ([3, 4], 7)]
]
```
main.rs
```rust
use subsetsum::dp::sequencematcher_m2m;
fn main() {
let result = sequencematcherm2m(&mut vec![1980, 2980, 3500, 4000, 1050], &mut vec![1950, 2900, 30, 80, 3300, 200, 3980, 1050, 20], 10);
println!("{:?}", result);
}
Output
[([20, 30, 1050, 2900], [4000]), ([200, 3300], [3500]), ([80, 1950, 3980], [1050, 1980, 2980])]
[([20, 3980], [4000]), ([80, 2900], [2980]), ([30, 1950], [1980]), ([1050], [1050]), ([200, 3300], [3500])]
[([20, 3980], [4000]), ([80, 2900], [2980]), ([1050], [1050]), ([30, 1950], [1980]), ([200, 3300], [3500])]
[([20, 3980], [4000]), ([200, 3300], [3500]), ([80, 2900], [2980]), ([1050], [1050]), ([30, 1950], [1980])]
[([30, 1950], [1980]), ([80, 2900], [2980]), ([20, 3980], [4000]), ([200, 3300], [3500]), ([1050], [1050])]
[([30, 1950], [1980]), ([80, 2900], [2980]), ([200, 3300], [3500]), ([20, 3980], [4000]), ([1050], [1050])]
[([30, 1950], [1980]), ([80, 2900], [2980]), ([1050], [1050]), ([20, 3980], [4000]), ([200, 3300], [3500])]
[([80, 2900], [2980]), ([20, 3980], [4000]), ([1050], [1050]), ([200, 3300], [3500]), ([30, 1950], [1980])]
[([80, 2900], [2980]), ([1050], [1050]), ([30, 1950], [1980]), ([20, 3980], [4000]), ([200, 3300], [3500])]
[([200, 3300], [3500]), ([20, 30, 1050, 2900], [4000]), ([80, 1950, 3980], [1050, 1980, 2980])]
[([200, 3300], [3500]), ([20, 3980], [4000]), ([80, 2900], [2980]), ([30, 1950], [1980]), ([1050], [1050])]
[([1050], [1050]), ([30, 1950], [1980]), ([20, 3980], [4000]), ([80, 2900], [2980]), ([200, 3300], [3500])]
```