What is the primary benefit of using one-dimensional arrays?
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They allow for efficient storage and access of multiple items of the same type.
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What is the primary benefit of using one-dimensional arrays?
They allow for efficient storage and access of multiple items of the same type.
What does Java do with the initial values of a 2D array?
Counts the initial values to determine the number of rows and columns.
What will be the output when the ArrayLoop program is executed?
13, 6, 2, 90, 78.
What does the statement 'new double[size]' do in the program?
It allocates a new array of doubles with the specified size.
What is the purpose of the Array2DLength class?
To demonstrate the use of .length with a 2D array in Java.
What is the data type of the variable 'mark'?
int[].
What is the syntax to create a 1D int array?
int [ ] list = new int [10];
What is the purpose of the Scanner class in the DynamicArray program?
To read user input for the size of the array.
What does a 2D array resemble?
A table.
How are elements organized in a 2D array?
Elements are organized in rows and columns, where each row is a 1D array.
What is the issue with handling more than four students in the Naive program?
It would require declaring multiple variables, which is impractical.
What does 'array.length' return in the context of the program?
The size of the dynamically allocated array.
What is the output of 'System.out.print(mark[4]);' if mark[4] is 89?
It prints the value 89.
What is a two-dimensional array?
An array that consists of rows and columns, allowing for the storage of data in a grid format.
What is the internal structure of a 2D array?
A 2D array is a composition of multiple 1D arrays.
What is an example of a real-world application of two-dimensional arrays?
Storing pixel data for images.
What must be done before using a 2D array?
It must be created.
What data type is used to store the average in the Naive program?
double.
What does 'mark[8] = 88;' do?
It assigns the value 88 to the ninth element of the array 'mark'.
What is the first element of myArray?
13 (myArray[0]).
What is the purpose of the loop in the ArrayLoop class?
To print each element of the array myArray.
What is the primary focus of ITP3914?
Concepts of Data Types and Operations.
What does 'myTable[0]' represent in a 2D array?
It represents the first 1D array in the 2D array.
What is an array?
An array is a collection of related data put together.
What is the syntax to create a 2D array in C?
int [ ][ ] myTable = new int [4][5];
What is the value at myArray[1] in the initialized array?
6
What does the variable 'mark' represent in the context?
It is a declaration for a 1D int array.
What is a one-dimensional array?
A data structure that stores a fixed-size sequence of elements of the same type.
How are the elements of myArray accessed in the loop?
One by one using their indices.
What type of array is created in the DynamicArray program?
A double array.
How many columns does each of the first three rows in myTable have?
Each of the first three rows has 5 columns.
What happens to the initial values when an array is created in Java?
The initial values are automatically placed inside the array.
What is the purpose of the command 'System.out.print(mark[0]);'?
It prints the value of the first element in the array 'mark'.
What is the value at myArray[3] in the initialized array?
90
How are elements accessed in a one-dimensional array?
Using an index that starts from zero.
What does myTable.length return in the given 2D array?
It returns 4, which is the number of rows in the array.
What must be done before using an array?
An array must be created.
What institution offers the ITP3914 course?
VTC, IVE.
What does the second index in a 2D array refer to?
The column number.
How is the average calculated in the Naive program?
By summing the grades and dividing by 4.0.
What does myArray.length return?
The number of elements in the array.
What does myTable[3].length return?
The number of elements in the row myTable[3], which is 5.
What does myTable[0].length return?
It returns 5, which is the number of columns in the first row.
How is an array initialized in Java without using the 'new' operator?
By directly assigning values within curly braces, e.g., int[] myArray = {13, 6, 2, 90, 78};
What is the output of myArray[1]?
What is the value at myArray[0] in the initialized array?
13
What would be a better approach to handle grades for 100 students?
Using an array to store the grades.
What is the last element of myArray?
78 (myArray[4]).
What is the range of the variable i in the for loop?
From 0 to 4.
In which programming part is ITP3914 categorized?
Part 2.
What is the error encountered when accessing myArray[5]?
java.lang.ArrayIndexOutOfBoundsException.
How do you create an integer array with 10 elements?
int[] mark = new int[10];
How would you access the element in the first row and second column of a 2D array named myTable?
System.out.print(myTable[0][1]);
What is the output of System.out.print(myTable[2][4]); after assigning 88 to it?
How do you access an element in a two-dimensional array?
By specifying the row and column indices.
How can you initialize a two-dimensional array?
By using nested braces to define rows and columns.
How do you declare an integer array in Java?
int[] mark;
What must all elements in an array have in common?
They must be of the same data type.
What is the output of myArray[3]?
What is the correct size of myArray in the provided code?
5 elements (indices 0 to 4).
What are the elements of the array myArray?
13, 6, 2, 90, 78.
What happens to the initial values in the 2D array?
They are automatically placed inside the array.
What programming language is associated with ITP3914?
C.
How many grades does the Naive program currently handle?
Four grades.
What is the output of myArray[2]?
What is the data type of the array 'myTable'?
int [ ][ ].
What is the value at myArray[4] in the initialized array?
78
How is a 2D array created in the provided Java example?
Through initialization without using the 'new' operator.
How is the size of the dynamically allocated array determined in the program?
By user input using kb.nextInt().
What is the purpose of the Naive program?
To calculate the average of four student grades.
What does the first index in a 2D array refer to?
The row number.
How are elements in an array indexed?
Elements are indexed with an integer.
What is the output of myArray[4]?
What does myTable.length return in a 2D array?
The number of rows in the 2D array, which is 4.
What is the primary role of a programmer?
To write a complete and precise set of instructions for a computer to solve a particular problem.
What happens when you try to access myTable[4].length?
It throws an ArrayIndexOutOfBoundsException because there is no fifth row.
What is a problem-solving task in programming?
A specific challenge or issue that requires a solution through coding.
What is the default value of elements in a numerical array?
Elements will be initialized to 0.
What is the syntax to assign the value 88 to the element in the third row and fifth column of myTable?
myTable[2][4] = 88;
What happens when you try to access an index outside the bounds of an array?
An ArrayIndexOutOfBoundsException is thrown.
Can the size of a one-dimensional array be changed after it is created?
No, the size is fixed upon creation.
What does a complete set of instructions for a computer entail?
It includes detailed steps that guide the computer in carrying out a specific task.
How many indices are needed to identify an element in a 2D array?
Two indices.
What output is produced when the user inputs '5' for the array size?
'Size of array=5'.
How many rows and columns does the array 'myTable' have?
4 rows and 5 columns.
What is the value at myArray[2] in the initialized array?
2
How many elements are in myArray?
5 elements.
What is the primary use of two-dimensional arrays?
To represent matrices or tables of data.
Why is precision important in programming instructions?
Precision ensures that the computer executes the task correctly without errors.
What does Java do when an array is initialized with values?
Java counts the number of initial values and determines the size of the array.
What output is produced when the user inputs '10' for the array size?
'Size of array=10'.
What does 'int num = 10;' represent?
Creating an int variable named 'num' with a value of 10.
What is the output of the loop in the ArrayLoop class?
It prints the elements of myArray: 13, 6, 2, 90, 78.
