algorithmz 0.9.4

This is the corresponding implemenation of the python module of the same name.
Documentation 
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use algorithmz::array::n_sum;

#[test]
fn test_n_sum() {
    let result = n_sum(3, vec![-1, 0, 1, 2, -1, -4], 0);
    assert_eq!(result,vec![vec![-1, -1, 2], vec![-1, 0, 1]]);
}