(English Medium) ICSE Class 10 - CISCE Important Questions

Using the switch statement, write a menu driven program to:
(i) To find and display all the factors of a number input by the user (including 1 and excluding number itself).

Example:
Sample Input: n=15
Sample Output: 1, 3, 5.
(ii) To find and display the factorial of a number input by the user (the factorial of a non-negative integer n, denoted by n\ is the product of all integers less than or equal to n.
Example:
Sample Input: n=5
Sample Output: 5! = 1×2×3×4×5 = 120.
For an incorrect choice, an appropriate error message should be displayed.

Find the errors in the given program segment and re-write the statements correctly to assign values to an integer array.
int a = new int (5);
for (int i = 0; i < = 5; i++) a [i] = i;

State the value of y after the following is executed:

char x = '7';

y = Character.isLetter(x);

Identify the correct array declaration statement.

Define a class to declare an integer array of size n and accept the elements into the array. Search for an element input by the user using the linear search technique, display the element if it is found, otherwise display the message “NO SUCH ELEMENT".

Define a class to declare a character array of size ten, accept the character into the array and perform the following:

• Count the number of uppercase letters in the array and print.
• Count the number of vowels in the array and print.

Define a class to declare an array of size 20 of the double datatype, accept the elements into the array and perform the following:

• Calculate and print the sum of all the elements.
• Calculate and print the highest value of the array.

int x = (int) 32.8; is an example of ______ typecasting.

The number of bits occupied by the value 'a' is ______.

Consider the given array and answer the question given below:

int x[ ] {4; 7,9,66,72,0,16);

What is the length of the array?

Consider the given array and answer the question given below:

int x[ ] {4; 7,9,66,72,0,16);

What is the value in x[4]?

Define a class to accept 10 characters from a user. Using bubble sort technique arrange them in ascending order. Display the sorted array and original array.

Define a class to accept values into an array of double data type of size 20. Accept a double value from user and search in the array using linear search method. If value is found display message "Found" with its potiition where it is present in the array. Otherwise display message "not found".

Which of the following is an escape sequence character in Java?

The number of bytes occupied by a character array of four rows and three columns is ______.

If (a>b&&b>c) then largest number is ______.

Consider the following two-dimensional array and answer the questions given below:

int x[ ][] = {{4,3,2}, {7,8,2}, {8,3,10}, {1,2,9}};

1. What is the order of the array?
2. What is the value of x [0] [0] + x [2] [2]?

Primitive data types are built in data types which are a part of the wrapper classes. These wrapper classes are encapsulated in the java.lang package. Non primitive datatypes like Scanner class are a part of the utility package for which an object needs to be created.

1. To which package the Character and Boolean classes belong?
2. Write the statement to access the Scanner class in the program.

Define a class pin code and store the given pin codes in a single-dimensional array. Sort these pin codes in ascending order using the Selection Sort technique only. Display the sorted array.

110061, 110001, 110029, 110023, 110055, 110006, 110019, 110033

The size of '\n' is ______.