public void TestNumSmallerByFrequency(string[] queries, string[] words, int[] expectedResult)
{
var stringProblems = new StringProblems();
var actualResult = stringProblems.NumSmallerByFrequency(queries, words);
Assert.Equal <int>(expectedResult.Length, actualResult.Length);
for (var i = 0; i < expectedResult.Length; i++)
{
Assert.Equal <int>(expectedResult[i], actualResult[i]);
}
}