private IEnumerable <List <string> > GetRepeatedString(int n, FastRandom rand)
{
for (int i = 0; i < n; i++)
{
yield return(Enumerable.Repeat(StringValueGenerator.GetRandomString(rand.Next(1, 50), rand), 3).ToList());
}
}
// https://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters
// characters used
// 9 \t
// 10 \n
// 32 space
// 33-126 other printable characters
/// <summary>
/// length is inclusive minLength and inclusive maxLength
/// </summary>
public static IEnumerable <string> GetRandomStrings(int n, int minLength, int maxLengthInclusive, FastRandom rand)
{
for (int i = 0; i < n; i++)
{
yield return(StringValueGenerator.GetRandomString(rand.Next(minLength, maxLengthInclusive + 1), rand)); // +1 , because rand.Next is exclusive upperBound
}
}
private List <List <string> > GetPermutationsWithTwoEmptyStrings(int n, FastRandom rand)
{
List <List <string> > strings = new List <List <string> >();
for (int i = 0; i < n; i++)
{
int length = rand.Next(1, 50);
string value = StringValueGenerator.GetRandomString(length, rand);
strings.AddRange(GetDistinctPermutations(new string[] { String.Empty, String.Empty, value }));
}
return(strings);
}
private IEnumerable <List <string> > GetStringsInSortedLengthOrder(int n, FastRandom rand)
{
for (int i = 0; i < n; i++)
{
List <string> strings = new List <string>(3)
{
StringValueGenerator.GetRandomString(rand.Next(0, 50), rand),
StringValueGenerator.GetRandomString(rand.Next(0, 50), rand),
StringValueGenerator.GetRandomString(rand.Next(0, 50), rand)
};
yield return(strings.OrderBy(x => x.Length).ToList());
}
}
private IEnumerable <List <string> > GetStrings(int n, FastRandom rand)
{
for (int i = 0; i < n; i++)
{
List <string> strings = new List <string>(3)
{
StringValueGenerator.GetRandomString(rand.Next(0, 50), rand),
StringValueGenerator.GetRandomString(rand.Next(0, 50), rand),
StringValueGenerator.GetRandomString(rand.Next(0, 50), rand)
};
yield return(strings);
}
}