public class MyException:Exception
{
public MyException (string msg) : base (msg)
{
}
}
public class MyArrayList<T>
{
T[] list;
int capacity = 0;
int count = 0;
bool isFixedSize = false;
public MyArrayList ()
{
}
public MyArrayList (int capacity)
{
this.capacity = capacity;
list = new T[capacity];
isFixedSize = true;
}
public int Count {
get{ return this.count; }
}
public int Capacity {
get{ return capacity; }
}
public bool IsFixedSize ()
{
return isFixedSize;
}
//索引器
public T this [int index] {
get {
return list [index];
}
set {
list [index] = value;
}
}
public void Add (T value)
{
if (list == null) {
list = new T[4];
capacity = 4;
}
if (count >= capacity) {
T[] temp = list;
list = new T[capacity *= 2];
for (int i = 0; i < count; i++) {
list [i] = temp [i];
}
}
list [count++] = value;
}
public void Sort ()
{
for (int i = 0; i < count; i++) {
for (int j = 0; j < count - i - 1; j++) {
if (list [i] is Person) {
IMyComparable obj1 = (IMyComparable)list [j];
IMyComparable obj2 = (IMyComparable)list [j + 1];
if (obj1.ComparaTo (obj2) > 0) {
T temp = list [j];
list [j] = list [j + 1];
list [j + 1] = temp;
}
} else if (list [i] is IComparable) {
IComparable obj1 = (IComparable)list [j];
IComparable obj2 = (IComparable)list [j + 1];
if (obj1.CompareTo (obj2) > 0) {
T temp = list [j];
list [j] = list [j + 1];
list [j + 1] = temp;
}
} else {
throw new MyException ("不能識别");
}
}
}
}
public int BinarySearch (T obj)
{
if (obj is Person) {
Person value = (Person)(object)obj;
if (count == 0 || value.Age < ((Person)(object)list [0]).Age) {
return -1;
}
int start = 0;
int end = list.Length;
int middle = (start + end) / 2;
while (start < end && (Person)(object)list [middle] != value) {
if (((Person)(object)list [middle]).ComparaTo (value) < 0) {
start = middle + 1;
}
if (((Person)(object)list [middle]).ComparaTo (value) > 0) {
end = middle - 1;
}
middle = (start + end) / 2;
}
if ((Person)(object)list [middle] != value) {
return -1;
} else {
return middle;
}
} else if (obj is IComparable) {
IComparable value = (IComparable)obj;
if (count == 0 || value.CompareTo ((IComparable)list [0]) < 0) {
return -1;
}
int start = 0;
int end = list.Length;
int middle = (start + end) / 2;
while (start < end && (0 != value.CompareTo ((IComparable)list [middle]))) {
if (value.CompareTo ((IComparable)list [middle]) > 0) {
start = middle + 1;
}
if (value.CompareTo ((IComparable)list [middle]) < 0) {
end = middle - 1;
}
middle = (start + end) / 2;
}
if (value.CompareTo ((IComparable)list [middle]) != 0) {
return -1;
} else {
return middle;
}
}
throw new MyException ("不能識别此類型");
}
public void Clear ()
{
count = 0;
list = new T[capacity];
}
public bool Contains (T value)
{
foreach (T obj in list) {
if ((object)obj == ((object)value)) {
return true;
}
}
return false;
}
public int IndexOf (T value)
{
int index = -1;
for (int i = 0; i < count; i++) {
T obj = list [i];
if (obj.Equals (value)) {
index = i;
}
}
return index;
;
}
public void Insert (int index, T value)
{
if (index > count + 1) {
throw new MyException ("下标超出範圍");
}
if (list == null) {
capacity = 4;
}
if (count + 1 >= capacity) {
capacity *= 2;
}
T[] temp = list;
list = new T[capacity];
if (temp != null) {
for (int i = 0; i <= count; i++) {
if (i < index) {
list [i] = temp [i];
}
if (i == index) {
list [i] = value;
}
if (i > index) {
list [i] = temp [i - 1];
}
}
count++;
}
}
public void Remove (T value)
{
T[] temp = list;
list = new T[capacity];
int j = 0;
bool isSucced = false;
for (int i = 0; i < count; i++) {
T obj = temp [i];
if (obj.Equals (value) && isSucced == false) {
isSucced = true;
} else {
list [j] = obj;
j++;
}
}
if (isSucced) {
count--;
} else {
throw new MyException ("未找到要移除元素");
}
}
public void RemoveAt (int index)
{
if (index >= count || index < 0) {
throw new MyException ("下标超出索引範圍");
}
T[] temp = list;
list = new T[capacity];
int item = 0;
for (int i = 0; i < count; i++) {
if (i != index) {
list [item] = temp [i];
item++;
}
}
count--;
}
public void Reverse ()
{
for (int i = 0; i < count / 2; i++) {
T temp = list [i];
list [i] = list [count - 1 - i];
list [count - 1 - i] = temp;
}
}
public T[] ToArray ()
{
T[] temp = new T[count];
for (int i = 0; i < count; i++) {
temp [i] = list [i];
}
return temp;
}
public override string ToString ()
{
string str = "";
if (count == 0) {
return "{}";
}
for (int i = 0; i < count; i++) {
if (i == 0) {
str += ("{" + list [i] + ",");
} else if (i == count - 1) {
str += (list [i] + "}");
} else {
str += list [i] + ",";
}
}
return String.Format ("{0} count{1} capacity{2}", str, count, capacity);
}
public void TrimToSize ()
{
if (capacity > count) {
capacity = count;
}
T[] temp = list;
list = new T[capacity];
for (int i = 0; i < count; i++) {
list [i] = temp [i];
}
}
}
public interface IMyComparable
{
int ComparaTo (object obj);
}
public class Person: IMyComparable
{
int age;
public int Age {
get{ return age; }
set{ age = value; }
}
public Person ()
{
}
public Person (int age)
{
this.age = age;
}
public override string ToString ()
{
return string.Format ("[Person: Age={0}]", Age);
}
public int ComparaTo (object obj)
{
if (obj is Person) {
Person other = (Person)obj;
if (age > other.age)
return 1;
else if (age < other.age)
return -1;
else if (age == other.age)
return 0;
}
throw new MyException ("比較識别不是Person的類型");
}
public static int Compara (object obj1, object obj2)
{
if (obj1 is Person && obj2 is Person) {
Person p1 = (Person)obj1;
Person p2 = (Person)obj2;
if (p1.Age > p2.Age)
return 1;
else if (p1.Age < p2.Age)
return -1;
else if (p1.Age == p2.Age)
return 0;
}
throw new MyException ("比較識别不是Person的類型");
}
}
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