public void NumDecodingsTest_Zero()
{
var solution = new _091_DecodeWays();
Assert.AreEqual(0, solution.NumDecodings("0"));
Assert.AreEqual(0, solution.NumDecodings("00"));
Assert.AreEqual(0, solution.NumDecodings("000"));
}
public void NumDecodingsTest_Length2()
{
var solution = new _091_DecodeWays();
for (var i = 11; i < 99; i++)
{
if (i / 10 * 10 == i)
{
Assert.AreEqual(i <= 20 ? 1 : 0, solution.NumDecodings(i.ToString()));
}
else
{
Assert.AreEqual(i > 26 ? 1 : 2, solution.NumDecodings(i.ToString()));
}
}
}
public void NumDecodingsTest_Length1()
{
var solution = new _091_DecodeWays();
for (var i = 1; i < 10; i++)
{
Assert.AreEqual(1, solution.NumDecodings(i.ToString()));
}
}
public void NumDecodingTest()
{
var solution = new _091_DecodeWays();
Assert.AreEqual(3, solution.NumDecodings("226"));
Assert.AreEqual(2, solution.NumDecodings("626"));
Assert.AreEqual(4, solution.NumDecodings("2626"));
Assert.AreEqual(2, solution.NumDecodings("1026"));
Assert.AreEqual(8, solution.NumDecodings("262626"));
Assert.AreEqual(4, solution.NumDecodings("102626"));
Assert.AreEqual(4, solution.NumDecodings("261026"));
Assert.AreEqual(2, solution.NumDecodings("101026"));
}
public void NumDecodingTest_LongInput()
{
var solution = new _091_DecodeWays();
Assert.AreEqual(0, solution.NumDecodings("6065812287883668764831544958683283296479682877898293612168136334983851946827579555449329483852397155"));
}