@testset "658.find-k-closest-elements.jl" begin
    @test find_closest_elements([1, 2, 3, 4, 5], 4, 3) == [1, 2, 3, 4]
    @test find_closest_elements([1, 2, 3, 4, 5], 4, -1) == [1, 2, 3, 4]
    @test find_closest_elements([10, 15, 24, 32, 60, 74, 84, 91, 105, 113, 114, 117, 150, 155, 173, 192, 231, 244, 271, 278, 300, 302, 324, 375, 384, 393, 420, 439, 465, 474, 490, 522, 585, 592, 592, 615, 619, 716, 768, 778, 823, 842, 843, 852, 852, 853, 909, 929, 930, 970], 20, 345) == [150,155,173,192,231,244,271,278,300,302,324,375,384,393,420,439,465,474,490,522]
end
