public void IsPalindromeTest()
{
var a = 9; // 1001
var b = 11; // 1011
Assert.IsTrue(Functions.IsPalindrome(a));
Assert.IsFalse(Functions.IsPalindrome(b));
Assert.IsTrue(Functions2.IsPalindrome(a));
Assert.IsFalse(Functions2.IsPalindrome(b));
}
public void IsLeapYearTest()
{
foreach (var year in Enumerable.Range(DateTime.MinValue.Year, DateTime.MaxValue.Year - DateTime.MinValue.Year + 1))
{
if (Functions.IsLeapYear(year) != DateTime.IsLeapYear(year) ||
Functions2.IsLeapYear(year) != DateTime.IsLeapYear(year))
{
Assert.Fail();
}
}
}
public void PadNumberWithZeroesTest()
{
Assert.IsTrue(Functions.PadNumberWithZeroes(5) == "00005");
Assert.IsTrue(Functions.PadNumberWithZeroes(15) == "00015");
Assert.IsTrue(Functions.PadNumberWithZeroes(9999) == "09999");
Assert.IsTrue(Functions.PadNumberWithZeroes(99999) == "99999");
Assert.IsTrue(Functions2.PadNumberWithZeroes(5) == "00005");
Assert.IsTrue(Functions2.PadNumberWithZeroes(15) == "00015");
Assert.IsTrue(Functions2.PadNumberWithZeroes(9999) == "09999");
Assert.IsTrue(Functions2.PadNumberWithZeroes(99999) == "99999");
}
public void CountSetBitsTest()
{
var a = 123; // 1111011
var b = 456; // 111001000
var c = 1000; // 1111101000
Assert.IsTrue(Functions.CountSetBits(a) == 7);
Assert.IsTrue(Functions.CountSetBits(b) == 9);
Assert.IsTrue(Functions.CountSetBits(c) == 10);
Assert.IsTrue(Functions2.CountSetBits(a) == 7);
Assert.IsTrue(Functions2.CountSetBits(b) == 9);
Assert.IsTrue(Functions2.CountSetBits(c) == 10);
}
public void CalculateNthFibonacciNumberTest()
{
Assert.IsTrue(Functions.CalculateNthFibonacciNumber(0) == 0);
Assert.IsTrue(Functions.CalculateNthFibonacciNumber(1) == 1);
int a = 0,
b = 1,
fib = 1,
n = 2,
maxN;
while (fib > 0) // when overflows the value becomes negative
{
fib = a + b;
a = b;
b = fib;
if (fib > 0 && Functions.CalculateNthFibonacciNumber(n++) != fib)
{
Assert.Fail();
}
}
maxN = n;
Assert.IsTrue(Functions2.CalculateNthFibonacciNumber(0) == 0);
Assert.IsTrue(Functions2.CalculateNthFibonacciNumber(1) == 1);
a = 0;
b = 1;
fib = 1;
n = 2;
while (n < maxN)
{
fib = a + b;
a = b;
b = fib;
if (Functions2.CalculateNthFibonacciNumber(n++) != fib)
{
Assert.Fail();
}
}
}
public void SelectPrimeNumbersTest()
{
var numbers = Enumerable.Range(2, 1000);
var prime = numbers.AsParallel().Select(x =>
{
for (int i = 2; i <= x / 2; i++)
{
if (i == x)
{
i = i + 1;
}
if (x % i == 0)
{
return(-1);
}
}
return(x);
}).Where(x => x > 0).OrderBy(x => x).ToArray();
Assert.IsTrue(prime.SequenceEqual(Functions.SelectPrimeNumbers(numbers)));
Assert.IsTrue(prime.SequenceEqual(Functions2.SelectPrimeNumbers(numbers)));
}
public void FindNthLargestNumberTest()
{
Assert.IsTrue(Functions.FindNthLargestNumber(new[] { 1, 4, 2, 5, 3 }.ToList(), 4) == 4);
Assert.IsTrue(Functions2.FindNthLargestNumber(new[] { 1, 4, 2, 5, 3 }.ToList(), 4) == 4);
}
public void ReverseStringTest()
{
Assert.IsTrue(Functions.ReverseString("erawtfoS wonS") == "Snow Software");
Assert.IsTrue(Functions2.ReverseString("erawtfoS wonS") == "Snow Software");
}
