Constructor and Description |
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IntArray()
Creates an empty IntArray with the default initial capacity.
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IntArray(int initialCapacity)
Creates an empty IntArray with the specified initial capacity.
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Modifier and Type | Method and Description |
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void |
add(int value)
Appends the specified value to the end of this array.
|
void |
add(int index,
int value)
Inserts a value at the specified position in this array.
|
void |
addAll(IntArray values)
Adds the values in the specified array to this array.
|
int |
binarySearch(int value)
Searches the array for the specified value using the binary search algorithm.
|
void |
clear()
Removes all values from this array.
|
IntArray |
clone()
Creates and returns a copy of this object.
|
int |
get(int index)
Returns the value at the specified position in this array.
|
int |
indexOf(int value)
Returns the index of the first occurrence of the specified value in this
array, or -1 if this array does not contain the value.
|
void |
remove(int index)
Removes the value at the specified index from this array.
|
int |
size()
Returns the number of values in this array.
|
int[] |
toArray()
Returns a new array with the contents of this IntArray.
|
public IntArray()
public IntArray(int initialCapacity)
public void add(int value)
public void add(int index, int value)
IndexOutOfBoundsException
- when index < 0 || index > size()public int binarySearch(int value)
Arrays.sort(int[], int, int)
method) prior to making this call.
If it is not sorted, the results are undefined. If the range contains multiple elements with
the specified value, there is no guarantee which one will be found.value
- The value to search for.size()
if all elements in the array are less than the specified key.
Note that this guarantees that the return value will be >= 0 if and only if the key
is found.public void addAll(IntArray values)
public void clear()
public IntArray clone() throws CloneNotSupportedException
Object
x
, the expression:
will be true, and that the expression:x.clone() != x
will bex.clone().getClass() == x.getClass()
true
, but these are not absolute requirements.
While it is typically the case that:
will bex.clone().equals(x)
true
, this is not an absolute requirement.
By convention, the returned object should be obtained by calling
super.clone
. If a class and all of its superclasses (except
Object
) obey this convention, it will be the case that
x.clone().getClass() == x.getClass()
.
By convention, the object returned by this method should be independent
of this object (which is being cloned). To achieve this independence,
it may be necessary to modify one or more fields of the object returned
by super.clone
before returning it. Typically, this means
copying any mutable objects that comprise the internal "deep structure"
of the object being cloned and replacing the references to these
objects with references to the copies. If a class contains only
primitive fields or references to immutable objects, then it is usually
the case that no fields in the object returned by super.clone
need to be modified.
The method clone
for class Object
performs a
specific cloning operation. First, if the class of this object does
not implement the interface Cloneable
, then a
CloneNotSupportedException
is thrown. Note that all arrays
are considered to implement the interface Cloneable
and that
the return type of the clone
method of an array type T[]
is T[]
where T is any reference or primitive type.
Otherwise, this method creates a new instance of the class of this
object and initializes all its fields with exactly the contents of
the corresponding fields of this object, as if by assignment; the
contents of the fields are not themselves cloned. Thus, this method
performs a "shallow copy" of this object, not a "deep copy" operation.
The class Object
does not itself implement the interface
Cloneable
, so calling the clone
method on an object
whose class is Object
will result in throwing an
exception at run time.
clone
in class Object
CloneNotSupportedException
- if the object's class does not
support the Cloneable
interface. Subclasses
that override the clone
method can also
throw this exception to indicate that an instance cannot
be cloned.Cloneable
public int get(int index)
public int indexOf(int value)
public void remove(int index)
public int size()
public int[] toArray()