Пример #1
0
    private static void TestAgainstNetListRandomly()
    {
        Random            rand  = new Random();
        IList <int>       list0 = new List <int>();
        AvlTreeList <int> list1 = new AvlTreeList <int>();
        int size = 0;

        for (int i = 0; i < 100000; i++)
        {
            int op = rand.Next(100);

            if (op < 1)                // Clear
            {
                list1.CheckStructure();
                list0.Clear();
                list1.Clear();
                size = 0;
            }
            else if (op < 2)                  // Set
            {
                if (size > 0)
                {
                    int index = rand.Next(size);
                    int val   = rand.Next();
                    list0[index] = val;
                    list1[index] = val;
                }
            }
            else if (op < 30)                  // Random insertion
            {
                int n = rand.Next(100) + 1;
                for (int j = 0; j < n; j++)
                {
                    int index = rand.Next(size + 1);
                    int val   = rand.Next();
                    list0.Insert(index, val);
                    list1.Insert(index, val);
                }
                size += n;
            }
            else if (op < 50)                  // Ascending insertion
            {
                int n      = rand.Next(100) + 1;
                int offset = rand.Next(size + 1);
                for (int j = 0; j < n; j++, offset++)
                {
                    int val = rand.Next();
                    list0.Insert(offset, val);
                    list1.Insert(offset, val);
                }
                size += n;
            }
            else if (op < 70)                  // Descending insertion
            {
                int n      = rand.Next(100) + 1;
                int offset = rand.Next(size + 1);
                for (int j = 0; j < n; j++)
                {
                    int val = rand.Next();
                    list0.Insert(offset, val);
                    list1.Insert(offset, val);
                }
                size += n;
            }
            else if (op < 80)                  // Random deletion
            {
                int n = rand.Next(100) + 1;
                for (int j = 0; j < n && size > 0; j++, size--)
                {
                    int index = rand.Next(size);
                    AssertEquals(list0[index], list1[index]);
                    list0.RemoveAt(index);
                    list1.RemoveAt(index);
                }
            }
            else if (op < 90)                  // Ascending deletion
            {
                int n = rand.Next(100) + 1;
                if (size > 0)
                {
                    int offset = rand.Next(size);
                    for (int j = 0; j < n && offset < size; j++, size--)
                    {
                        AssertEquals(list0[offset], list1[offset]);
                        list0.RemoveAt(offset);
                        list1.RemoveAt(offset);
                    }
                }
            }
            else if (op < 100)                  // Descending deletion
            {
                int n = rand.Next(100) + 1;
                if (size > 0)
                {
                    int offset = rand.Next(size);
                    for (int j = 0; j < n && offset >= 0; j++, offset--, size--)
                    {
                        AssertEquals(list0[offset], list1[offset]);
                        list0.RemoveAt(offset);
                        list1.RemoveAt(offset);
                    }
                }
            }
            else
            {
                throw new SystemException();
            }

            AssertEquals(size, list0.Count);
            AssertEquals(size, list1.Count);
            if (size > 0)
            {
                for (int j = 0; j < 10; j++)
                {
                    int index = rand.Next(size);
                    AssertEquals(list0[index], list1[index]);
                }
            }
        }
    }
    private static void TestRemoveAt()
    {
        AvlTreeList <char> list = new AvlTreeList <char>();

        {
            string str = "the quick brown fox jumped over the lazy dog";
            for (int i = 0; i < str.Length; i++)
            {
                list.Add(str[i]);
            }
            AssertEquals(list.Count, str.Length);
        }

        AssertEquals(list[2], 'e');  list.RemoveAt(2);
        AssertEquals(list[4], 'u');  list.RemoveAt(4);
        AssertEquals(list[3], 'q');  list.RemoveAt(3);
        AssertEquals(list[2], ' ');  list.RemoveAt(2);
        AssertEquals(list[12], 'f');  list.RemoveAt(12);
        AssertEquals(list[11], ' ');  list.RemoveAt(11);
        AssertEquals(list[10], 'n');  list.RemoveAt(10);
        AssertEquals(list[9], 'w');  list.RemoveAt(9);
        AssertEquals(list[11], ' ');  list.RemoveAt(11);
        AssertEquals(list[11], 'j');  list.RemoveAt(11);
        AssertEquals(list[11], 'u');  list.RemoveAt(11);
        AssertEquals(list[10], 'x');  list.RemoveAt(10);
        AssertEquals(list[11], 'p');  list.RemoveAt(11);
        AssertEquals(list[12], 'd');  list.RemoveAt(12);
        AssertEquals(list[11], 'e');  list.RemoveAt(11);
        AssertEquals(list[13], 'v');  list.RemoveAt(13);
        AssertEquals(list[13], 'e');  list.RemoveAt(13);
        AssertEquals(list[19], 'l');  list.RemoveAt(19);
        AssertEquals(list[20], 'z');  list.RemoveAt(20);
        AssertEquals(list[19], 'a');  list.RemoveAt(19);
        AssertEquals(list[18], ' ');  list.RemoveAt(18);
        AssertEquals(list[22], 'g');  list.RemoveAt(22);

        {
            String str = "thick broom or they do";
            AssertEquals(list.Count, str.Length);
            for (int i = 0; i < str.Length; i++)
            {
                AssertEquals(list[i], str[i]);
            }
        }

        AssertEquals(list[0], 't');  list.RemoveAt(0);
        AssertEquals(list[2], 'c');  list.RemoveAt(2);
        AssertEquals(list[2], 'k');  list.RemoveAt(2);
        AssertEquals(list[2], ' ');  list.RemoveAt(2);
        AssertEquals(list[2], 'b');  list.RemoveAt(2);
        AssertEquals(list[2], 'r');  list.RemoveAt(2);
        AssertEquals(list[2], 'o');  list.RemoveAt(2);
        AssertEquals(list[2], 'o');  list.RemoveAt(2);
        AssertEquals(list[4], 'o');  list.RemoveAt(4);
        AssertEquals(list[7], 'h');  list.RemoveAt(7);
        AssertEquals(list[5], ' ');  list.RemoveAt(5);
        AssertEquals(list[5], 't');  list.RemoveAt(5);
        AssertEquals(list[9], 'o');  list.RemoveAt(9);
        AssertEquals(list[7], ' ');  list.RemoveAt(7);
        AssertEquals(list[6], 'y');  list.RemoveAt(6);

        {
            String str = "him red";
            AssertEquals(list.Count, str.Length);
            for (int i = 0; i < str.Length; i++)
            {
                AssertEquals(list[i], str[i]);
            }
        }
    }