var sol = new Solution();

var cases = new (string s, string[] words, int[] expected)[]
{
	// ("barfoothefoobarman", new[] { "foo", "bar" }, new[] { 0, 9 }),
	// ("wordgoodgoodgoodbestword", new[] { "word", "good", "best", "word" }, Array.Empty<int>()),
	// ("barfoofoobarthefoobarman", new[] { "bar", "foo", "the" }, new[] { 6, 9, 12 }),
	("wordgoodgoodgoodbestword", new[] { "word", "good", "best", "good" }, new[] { 8 })
};

string Format(IEnumerable<int> values) => $"[{string.Join(",", values)}]";
string FormatWords(IEnumerable<string> values) => $"[{string.Join(",", values)}]";

foreach (var (s, words, expected) in cases)
{
	var actual = sol.FindSubstring(s, words);
	Console.WriteLine($"{s} | {FormatWords(words)} -> {Format(actual)} (expected: {Format(expected)})");
}