public void FindPrefix1_PassedNoCommonPrefixStringArray_ReturnsEmptyString()
{
string[] input = new string[] { "abc", "def", "ghi" };
Assert.AreEqual("", LongestCommonPrefix.FindPrefix1(input));
}
public void FindPrefix1_PassedFlStringArray_Returnsfl()
{
string[] input = new string[] { "flower", "flow", "fleet" };
Assert.AreEqual("fl", LongestCommonPrefix.FindPrefix1(input));
}