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How do you initialize an array variable in java program?
An array in java is a collection of items stored into a single unit. The array has some number of slots (elements), each slot in the array can hold an object or a primitive value. Arrays in java are objects that can be treated just like other objects in the languageArrays can contain any type of element value , but we can't store different types in a single array. We can have an array of integers or an array of strings or an array of arrays.To create an array in java ,use three steps1. Declare a variable to hold the array2. Create a new array object and assign it to the array variable3. Store things in that array
Which condition is not necessary in dynamic stack?
in dynamic stack we don't have to initialize the size of array while in static stack we have 2 initialize it ......
What is the difference between a fixed size array and a variable size array?
The obvious answer is that one has a constant size while the other does not. More specifically, a fixed-size array is one where the size is known at compile time and does not change at runtime. By contrast, the size of a variable-sized array may or may not be known at compile time but may change at runtime. We often refer to a variable-size array as being a dynamic array, however some people (myself included) incorrectly refer to a fixed-size array as being a static array. The misunderstanding largely comes from the fact that we often refer to the heap (or free store) as being dynamic memory because all dynamic variables are allocated there (including variable-size arrays). But the term dynamic array does not refer to the memory, it refers to the dynamic -- as in changeable -- nature of the array itself. By contrast, a fixed-size array is only deemed static if it is statically allocated, in which case it will be allocated in the program's data segment along with all other static variables, global variables and constants. But a local fixed-size array is allocated on the program's stack and is therefore, by definition, non-static. Moreover, you can allocate a fixed-size array on the heap!
What are types of array operation?
Here are some: Create an array Destroy it Access an element of it
What is array in structures?
array is used to store the ame datatypes syntex: int array[]=new int[size]; dynamic declaration of array insertion array[1]=20; 2nd way: int array[]={10,20,30}; *important:- int array[20]={20,30,49,....} this way is wrong in java as this is static way and in java all is done dynamically
How do you free two dimensional dynamic array?
Depends on how you allocated it: every malloc has to to have a corresponding free.
How can you create an array of numbers easily in php?
$foo = array(1.41421356, 1.61803399, 2.71828183, 3.14159265);
What static array and dynamic array in visual basic?
Generally speaking, a static array is a fixed-length array while a dynamic array is a variable-length array. However, we prefer the terms fixed-length and variable-length because static objects are objects that are allocated in static memory at compile time, which means they have a fixed offset address (the offset remains the same for each execution and will not change at runtime). Dynamic objects, on the other hand, are allocated and destroyed at runtime, which means they have dynamic addresses; each time the object is instantiated we cannot guarantee it resides at the same address. To put it another way, all static arrays must be fixed-length arrays, but not all fixed-length arrays must be static arrays. We can allocate a fixed-length array in static memory (in which case it is also a static array), but we can also allocate a fixed-length array on the call stack or on the heap, in which case we can potentially create more than one instance of that array, each with its own unique address. Consider a recursive function that instantiates a local (non-static) fixed-length array: each instance of that function would instantiate a new instance of that array, each with its own unique address. Similarly with multi-threaded applications: each thread has its own call stack, thus we could potentially have multiple threads invoking the same function and thus instantiating multiple instances of the same array in different call stacks, each with its own unique address. And if we allocate a fixed-length array on the heap, we have no guarantee where that array will be allocated. So whenever we speak of static or dynamic allocations, remember that we are specifically referring to the address (or at least the offset address). Dynamic addresses can change at runtime, static addresses cannot. Although the physical address of a static object can change between executions, its offset address (relative to the start of the static data segment) can never change -- not without recompiling the executable.
What is static array and dynamic array in visual basic?
Generally speaking, a static array is a fixed-length array while a dynamic array is a variable-length array. However, we prefer the terms fixed-length and variable-length because static objects are objects that are allocated in static memory at compile time, which means they have a fixed offset address (the offset remains the same for each execution and will not change at runtime). Dynamic objects, on the other hand, are allocated and destroyed at runtime, which means they have dynamic addresses; each time the object is instantiated we cannot guarantee it resides at the same address. To put it another way, all static arrays must be fixed-length arrays, but not all fixed-length arrays must be static arrays. We can allocate a fixed-length array in static memory (in which case it is also a static array), but we can also allocate a fixed-length array on the call stack or on the heap, in which case we can potentially create more than one instance of that array, each with its own unique address. Consider a recursive function that instantiates a local (non-static) fixed-length array: each instance of that function would instantiate a new instance of that array, each with its own unique address. Similarly with multi-threaded applications: each thread has its own call stack, thus we could potentially have multiple threads invoking the same function and thus instantiating multiple instances of the same array in different call stacks, each with its own unique address. And if we allocate a fixed-length array on the heap, we have no guarantee where that array will be allocated. So whenever we speak of static or dynamic allocations, remember that we are specifically referring to the address (or at least the offset address). Dynamic addresses can change at runtime, static addresses cannot. Although the physical address of a static object can change between executions, its offset address (relative to the start of the static data segment) can never change -- not without recompiling the executable.
How do you create an array and perform insertion and deletion in this array in C plus plus?
There are two ways to ceate an array.One is static and the other is dynamic. In a static way,when you defined an anrry,you must designate the number of its elements. For example: char a[10].In this way.Its memory location is assigned when it's compiled. In a dynamic way,you can assign the memory location of an array when you need it . You can use the operation of 'new' to asign memory location for an array,and free the memory location by 'delete' operation. For example: char a[];a=new char[10];When we need to free it ,wo just need to do like this :delete[] a; Of course, when we create an array,wo need to insert elments.We can directly gave a string to it,but before that wo must make sure the array is long enough. For example: a="word":(here wo just need to use the name of array) It also can be assigned one-by-one.It means wo can use a circle construct to gave evalution. For example : for(int i=0;i<10;i++) { cin>>a[i]; }
You can use a variable to declare an array's size true or false?
True and false in the same time, because even so you can declare array size using notation for variables you have use constwhich makes your variable basically a constant:const int arraySize = 10;In Java, you can use any expression to define the array size, when you create the array. Once you create an Array object, however, you can't redimension it - but you can create a new Array object and destroy the old one.
Create a mark list using array with structure?
sorce code for student mark list usig array
