Which one of the following statements is true about passing arrays to a method?

Which one of the following statements is true about passing arrays to a method? By default, arrays are passed by reference to a method.

When you pass an array to a method the method receives quizlet?

Unicode value u0000 is also known as null. When you pass an array element to a method, the method receives a copy of the value in the element.

Which of the following method calls will return the number of elements in the ArrayList list?

The size() method of java. util. ArrayList class is used to get the number of elements in this list. Returns Value: This method returns the number of elements in this list.

What technique does the function use to refer to array elements?

What technique does the function use to refer to array elements? Pointer/offset notation where the pointer is actually the name of the array.

Which one of the following statements is true about using arrays with methods?

In this section you can learn and practice C# Programming Questions based on "Arrays" and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

Inhaltsverzeichnis Show

Where can I get C# Programming Arrays questions and answers with explanation?
Where can I get C# Programming Arrays Interview Questions and Answers (objective type, multiple choice)?
How to solve C# Programming Arrays problems?
Declaring a Variable to Refer to an Array
Creating, Initializing, and Accessing an Array
Copying Arrays
Array Manipulations
Which one of the following statements is true about passing arrays to a method?
When you pass an array to a method the method receives quizlet?
Which of the following method calls will return the number of elements in the ArrayList list?
What technique does the function use to refer to array elements?

Where can I get C# Programming Arrays questions and answers with explanation?

IndiaBIX provides you lots of fully solved C# Programming (Arrays) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. All students, freshers can download C# Programming Arrays quiz questions with answers as PDF files and eBooks.

Where can I get C# Programming Arrays Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type C# Programming Arrays questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

How to solve C# Programming Arrays problems?

You can easily solve all kind of C# Programming questions based on Arrays by practicing the objective type exercises given below, also get shortcut methods to solve C# Programming Arrays problems.

An array is a container object that holds a fixed number of values of a single type. The length of an array is established when the array is created. After creation, its length is fixed. You have seen an example of arrays already, in the

Element at index 0: 100
Element at index 1: 200
Element at index 2: 300
Element at index 3: 400
Element at index 4: 500
Element at index 5: 600
Element at index 6: 700
Element at index 7: 800
Element at index 8: 900
Element at index 9: 1000

9 method of the "Hello World!" application. This section discusses arrays in greater detail.

An array of 10 elements.

Each item in an array is called an element, and each element is accessed by its numerical index. As shown in the preceding illustration, numbering begins with 0. The 9th element, for example, would therefore be accessed at index 8.

The following program,

// declares an array of integers
int[] anArray;

0, creates an array of integers, puts some values in the array, and prints each value to standard output.

class ArrayDemo {
    public static void main(String[] args) {
        // declares an array of integers
        int[] anArray;

        // allocates memory for 10 integers
        anArray = new int[10];
           
        // initialize first element
        anArray[0] = 100;
        // initialize second element
        anArray[1] = 200;
        // and so forth
        anArray[2] = 300;
        anArray[3] = 400;
        anArray[4] = 500;
        anArray[5] = 600;
        anArray[6] = 700;
        anArray[7] = 800;
        anArray[8] = 900;
        anArray[9] = 1000;

        System.out.println("Element at index 0: "
                           + anArray[0]);
        System.out.println("Element at index 1: "
                           + anArray[1]);
        System.out.println("Element at index 2: "
                           + anArray[2]);
        System.out.println("Element at index 3: "
                           + anArray[3]);
        System.out.println("Element at index 4: "
                           + anArray[4]);
        System.out.println("Element at index 5: "
                           + anArray[5]);
        System.out.println("Element at index 6: "
                           + anArray[6]);
        System.out.println("Element at index 7: "
                           + anArray[7]);
        System.out.println("Element at index 8: "
                           + anArray[8]);
        System.out.println("Element at index 9: "
                           + anArray[9]);
    }
}

The output from this program is:

Element at index 0: 100
Element at index 1: 200
Element at index 2: 300
Element at index 3: 400
Element at index 4: 500
Element at index 5: 600
Element at index 6: 700
Element at index 7: 800
Element at index 8: 900
Element at index 9: 1000

In a real-world programming situation, you would probably use one of the supported looping constructs to iterate through each element of the array, rather than write each line individually as in the preceding example. However, the example clearly illustrates the array syntax. You will learn about the various looping constructs (

// declares an array of integers
int[] anArray;

// declares an array of integers
int[] anArray;

2, and

// declares an array of integers
int[] anArray;

3) in the Control Flow section.

Declaring a Variable to Refer to an Array

The preceding program declares an array (named

// declares an array of integers
int[] anArray;

4) with the following line of code:

// declares an array of integers
int[] anArray;

Like declarations for variables of other types, an array declaration has two components: the array's type and the array's name. An array's type is written as

// declares an array of integers
int[] anArray;

5, where

// declares an array of integers
int[] anArray;

6 is the data type of the contained elements; the brackets are special symbols indicating that this variable holds an array. The size of the array is not part of its type (which is why the brackets are empty). An array's name can be anything you want, provided that it follows the rules and conventions as previously discussed in the section. As with variables of other types, the declaration does not actually create an array; it simply tells the compiler that this variable will hold an array of the specified type.

Similarly, you can declare arrays of other types:

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

You can also place the brackets after the array's name:

// this form is discouraged
float anArrayOfFloats[];

However, convention discourages this form; the brackets identify the array type and should appear with the type designation.

Creating, Initializing, and Accessing an Array

One way to create an array is with the

// declares an array of integers
int[] anArray;

7 operator. The next statement in the

// declares an array of integers
int[] anArray;

0 program allocates an array with enough memory for 10 integer elements and assigns the array to the

// declares an array of integers
int[] anArray;

4 variable.

// create an array of integers
anArray = new int[10];

If this statement is missing, then the compiler prints an error like the following, and compilation fails:

ArrayDemo.java:4: Variable anArray may not have been initialized.

The next few lines assign values to each element of the array:

anArray[0] = 100; // initialize first element
anArray[1] = 200; // initialize second element
anArray[2] = 300; // and so forth

Each array element is accessed by its numerical index:

System.out.println("Element 1 at index 0: " + anArray[0]);
System.out.println("Element 2 at index 1: " + anArray[1]);
System.out.println("Element 3 at index 2: " + anArray[2]);

Alternatively, you can use the shortcut syntax to create and initialize an array:

int[] anArray = { 
    100, 200, 300,
    400, 500, 600, 
    700, 800, 900, 1000
};

Here the length of the array is determined by the number of values provided between braces and separated by commas.

You can also declare an array of arrays (also known as a multidimensional array) by using two or more sets of brackets, such as

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

0. Each element, therefore, must be accessed by a corresponding number of index values.

In the Java programming language, a multidimensional array is an array whose components are themselves arrays. This is unlike arrays in C or Fortran. A consequence of this is that the rows are allowed to vary in length, as shown in the following

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

1 program:

Element at index 0: 100
Element at index 1: 200
Element at index 2: 300
Element at index 3: 400
Element at index 4: 500
Element at index 5: 600
Element at index 6: 700
Element at index 7: 800
Element at index 8: 900
Element at index 9: 1000

The output from this program is:

Finally, you can use the built-in

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

2 property to determine the size of any array. The following code prints the array's size to standard output:

Element at index 0: 100
Element at index 1: 200
Element at index 2: 300
Element at index 3: 400
Element at index 4: 500
Element at index 5: 600
Element at index 6: 700
Element at index 7: 800
Element at index 8: 900
Element at index 9: 1000

Copying Arrays

The

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

3 class has an

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

4 method that you can use to efficiently copy data from one array into another:

Element at index 0: 100
Element at index 1: 200
Element at index 2: 300
Element at index 3: 400
Element at index 4: 500
Element at index 5: 600
Element at index 6: 700
Element at index 7: 800
Element at index 8: 900
Element at index 9: 1000

The two

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

5 arguments specify the array to copy from and the array to copy to. The three

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

6 arguments specify the starting position in the source array, the starting position in the destination array, and the number of array elements to copy.

The following program,

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

7, declares an array of

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

8 elements. It uses the

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

9 method to copy a subsequence of array components into a second array:

Element at index 0: 100
Element at index 1: 200
Element at index 2: 300
Element at index 3: 400
Element at index 4: 500
Element at index 5: 600
Element at index 6: 700
Element at index 7: 800
Element at index 8: 900
Element at index 9: 1000

The output from this program is:

Element at index 0: 100
Element at index 1: 200
Element at index 2: 300
Element at index 3: 400
Element at index 4: 500
Element at index 5: 600
Element at index 6: 700
Element at index 7: 800
Element at index 8: 900
Element at index 9: 1000

Array Manipulations

Arrays are a powerful and useful concept used in programming. Java SE provides methods to perform some of the most common manipulations related to arrays. For instance, the

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

7 example uses the

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

4 method of the

byte[] anArrayOfBytes;
short[] anArrayOfShorts;
long[] anArrayOfLongs;
float[] anArrayOfFloats;
double[] anArrayOfDoubles;
boolean[] anArrayOfBooleans;
char[] anArrayOfChars;
String[] anArrayOfStrings;

3 class instead of manually iterating through the elements of the source array and placing each one into the destination array. This is performed behind the scenes, enabling the developer to use just one line of code to call the method.

For your convenience, Java SE provides several methods for performing array manipulations (common tasks, such as copying, sorting and searching arrays) in the

// this form is discouraged
float anArrayOfFloats[];

3 class. For instance, the previous example can be modified to use the

// this form is discouraged
float anArrayOfFloats[];

4 method of the

// this form is discouraged
float anArrayOfFloats[];

3 class, as you can see in the

// this form is discouraged
float anArrayOfFloats[];

6 example. The difference is that using the

// this form is discouraged
float anArrayOfFloats[];

4 method does not require you to create the destination array before calling the method, because the destination array is returned by the method:

Element at index 0: 100
Element at index 1: 200
Element at index 2: 300
Element at index 3: 400
Element at index 4: 500
Element at index 5: 600
Element at index 6: 700
Element at index 7: 800
Element at index 8: 900
Element at index 9: 1000

As you can see, the output from this program is the same, although it requires fewer lines of code. Note that the second parameter of the

// this form is discouraged
float anArrayOfFloats[];

4 method is the initial index of the range to be copied, inclusively, while the third parameter is the final index of the range to be copied, exclusively. In this example, the range to be copied does not include the array element at index 9 (which contains the string

// this form is discouraged
float anArrayOfFloats[];

9).

Some other useful operations provided by methods in the

// this form is discouraged
float anArrayOfFloats[];

3 class are:

Searching an array for a specific value to get the index at which it is placed (the
```
// create an array of integers
anArray = new int[10];
```
1 method).
Comparing two arrays to determine if they are equal or not (the
```
// create an array of integers
anArray = new int[10];
```
2 method).
Filling an array to place a specific value at each index (the
```
// create an array of integers
anArray = new int[10];
```
3 method).
Sorting an array into ascending order. This can be done either sequentially, using the
```
// create an array of integers
anArray = new int[10];
```
4 method, or concurrently, using the
```
// create an array of integers
anArray = new int[10];
```
5 method introduced in Java SE 8. Parallel sorting of large arrays on multiprocessor systems is faster than sequential array sorting.

Creating a stream that uses an array as its source (the

// create an array of integers
anArray = new int[10];

6 method). For example, the following statement prints the contents of the

// create an array of integers
anArray = new int[10];

7 array in the same way as in the previous example:

Element at index 0: 100
Element at index 1: 200
Element at index 2: 300
Element at index 3: 400
Element at index 4: 500
Element at index 5: 600
Element at index 6: 700
Element at index 7: 800
Element at index 8: 900
Element at index 9: 1000

See Aggregate Operations for more information about streams.

Converting an array to a string. The
```
// create an array of integers
anArray = new int[10];
```
8 method converts each element of the array to a string, separates them with commas, then surrounds them with brackets. For example, the following statement converts the
```
// create an array of integers
anArray = new int[10];
```
7 array to a string and prints it:

Which one of the following statements is true about passing arrays to a method?

Which one of the following statements is true about passing arrays to a method? By default, arrays are passed by reference to a method.

When you pass an array to a method the method receives quizlet?

Unicode value \u0000 is also known as null. When you pass an array element to a method, the method receives a copy of the value in the element.

Which of the following method calls will return the number of elements in the ArrayList list?

The size() method of java. util. ArrayList class is used to get the number of elements in this list. Returns Value: This method returns the number of elements in this list.

What technique does the function use to refer to array elements?

What technique does the function use to refer to array elements? Pointer/offset notation where the pointer is actually the name of the array.