public void StringDuplicate_DuplicateEncode_BasicTests()
{
Assert.AreEqual("(((", StringDuplicate.DuplicateEncode("din"));
Assert.AreEqual("()()()", StringDuplicate.DuplicateEncode("recede"));
Assert.AreEqual(")())())", StringDuplicate.DuplicateEncode("Success"), "should ignore case");
Assert.AreEqual("))((", StringDuplicate.DuplicateEncode("(( @"));
}
public void StringDuplicate_DuplicateEncode_RandomTests()
{
var rand = new Random();
Func <string, string> myDuplicateEncode = delegate(string word)
{
Dictionary <char, int> dict = new Dictionary <char, int>();
for (int i = 0; i < word.Length; i++)
{
if (!dict.ContainsKey(char.ToLower(word[i])))
{
dict.Add(char.ToLower(word[i]), 0);
}
dict[char.ToLower(word[i])]++;
}
string result = "";
for (var i = 0; i < word.Length; i++)
{
if (dict[char.ToLower(word[i])] == 1)
{
result += "(";
}
else
{
result += ")";
}
}
return(result);
};
for (int r = 0; r < 10; r++)
{
var length = rand.Next(10, 21);
var chars = "abcdeFGHIJklmnOPQRSTuvwxyz() @!";
var word = string.Concat(Enumerable.Range(0, length).Select(a => chars[rand.Next(0, chars.Length)]));
Assert.AreEqual(myDuplicateEncode(word), StringDuplicate.DuplicateEncode(word));
}
}
public void StringDuplicate_DuplicateEncode_ParenthesesTests()
{
Assert.AreEqual("))((", StringDuplicate.DuplicateEncode("(( @"));
Assert.AreEqual(")))))(", StringDuplicate.DuplicateEncode(" ( ( )"));
}