public void CopyTo()
{
SimpleList <string> strings = new SimpleList <string>(3);
strings.Add("Hello ");
strings.Add("world!");
string[] stringsArr = new string[2];
strings.CopyTo(stringsArr, 0);
Assert.AreEqual("Hello ", stringsArr[0]);
Assert.AreEqual("world!", stringsArr[1]);
Assert.AreEqual(2, strings.Count);
Assert.AreEqual(2, stringsArr.Length);
Assert.ThrowsException <ArgumentNullException>(() =>
{
strings.CopyTo(null, 0);
});
Assert.ThrowsException <ArgumentException>(() =>
{
stringsArr = new string[0];
strings.CopyTo(stringsArr, 0);
});
}
/// <summary>
/// <paramref name="n"/> の約数を返します。
/// </summary>
public static long[] Divisor(long n)
{
if (n == 1)
{
return new long[] { 1 }
}
;
var left = new SimpleList <long>();
var right = new SimpleList <long>();
left.Add(1);
right.Add(n);
for (long i = 2, d = Math.DivRem(n, i, out long amari);
i <= d;
i++, d = Math.DivRem(n, i, out amari))
{
if (amari == 0)
{
left.Add(i);
if (i != d)
{
right.Add(d);
}
}
}
right.Reverse();
var res = new long[left.Count + right.Count];
left.CopyTo(res, 0);
right.CopyTo(res, left.Count);
return(res);
}
