Bhawani Model Question Paper for Std X first term 2018 SET No 3

Section A

[Answer all Questions]

1.       Do as directed

a)      Give one example each of a primitive data type and a composite data type.

b)      Give one point of difference between unary and binary operators.

2.       Write a Java statement to input / read the following from the user using the keyboard:

i) Character ii) String

3.       What will be the output for the following program segment?

int a=0, b=30, c=40;

a = --b + c++ + b;

System.out.println("a=" + a);

4.       Write one word answer for the following:

i) A method that converts a string to a primitive integer data type

ii) The default initial value of a boolean variable data type

5.       Name the primitive data type in Java that is:

(i) a 64-bit integer and is used when you need a range of values wider than those provided by int.

(ii) a single 16-bit Unicode character whose default value is ‘\u0000'

6. Give the output

System.out.println("The King said \"Begin at the beginning!\" to me.");

7.       What are the types of casting shown by the following examples:

(i) char c = (char)120;

(ii) int x = ‘t’;

8. Differentiate between if and switch statement

9.       Give the output of the following code segment when (i) opn = ‘b’ (ii) opn = ‘x’ (iii) opn = ‘a’.

switch(opn)

{

    case 'a':

      System.out.println("Platform Independent");

      break;

    case 'b':

      System.out.println("Object Oriented");

    case 'c':

      System.out.println("Robust and Secure");

      break;

    default:

      System.out.println("Wrong Input");

}

10.   What is the difference between break and continue statements when they occur in a loop.

11.   What is an infinite loop? Write an infinite loop statement.

12.   Give the output of the following program segment and also mention the number of times the loop is executed:

int a,b;

for(a=6,b=4;a<=24;a=a+6)

{

if(a%b==0)

break;

}

System.out.println(a);

13. Find and correct the errors in the following program segment:-

int n[] = (2,4,6,8,10);

for(int i=0; i<=5; i++)

System.out.println("n[" + i + "] = " + n[i]);

14.   Name the search or sort algorithm that:

(i)         Makes several passes through the array, selecting the next smallest item in the array each time and placing it where it belongs in the array.

(ii)       At each stage, compares the sought key value with the key value of the middle element of the array.

15.   What is the output of the following?

String S1 = "Hi";

String S2 = "Hi";

String S3 = "there";

String S4 = "HI";

System.out.println(S1 + "equals" + S2 + "->" + S1.equals(S2));

System.out.println(S1 + "equals" + S3 + "->" + S1 .equals(S3));

System.out.println(S1 + "equals" + S4 + "->" + S1 .equals(S4));

System.out.println(S1 + "equalsIgnoreCase" +S4 + "->" + S1.equalsIgnoreCase(S4));

16.   State the values stored in variables str1 and str2

String s1 = "good";

String s2="world matters";

String str1 = s2.substring(5).replace('t','n');

String str2 = s1.concat(str1);

Section B

[Answer any four Questions]

1.       Write a program to check if a number is a Magic Number or not.

A number is said to be a Magic number if the sum of its digits are calculated till a single digit is obtained by recursively adding the sum of its digits. If the single digit comes to be 1 then the number is a magic number. Example- 199 is a magic number as 1+9+9=19 but 19 is not a single digit number so 1+9=10 and then 1+0=1 which is a single digit number and also 1. Hence it is a magic number.

2.       Write a menu driven to accept a number from the user and check whether it is a Palindrome or a Perfect number.

1.       Palindrome number – (a number is a Palindrome which when read in reserve order is same as read in the right order)
Example: 11, 101, 151, etc.

2.       Perfect number – (a number is called Perfect if it is equal to the sum of its factors others than the number itself.)
Example: 6 = 1 + 2 + 3

3.       Write a program to accept the names of 10 cities in a single dimension string array and their STD (Subscribers Trunk Dialing) codes in another single dimension integer array. Search for a name of a city input by the user in the list’ if found, display “search Successful” and print the name of the city along with its STD code, or else display the message  search Unsuccessful, No such city in the list. Use Binary Search Technique for sorting

4.       Write a menu driven program in Java:

(a) to input a number and check whether it is a NEON number or not

(b) to print the REPUNIT series: 1, 11, 111, 1111, .... upto 'n' terms

Note:

NEON:

A number is said to be NEON, if sum of all the digits of the square of the number is equal to the number itself.

For example 9 is a NEON number 

(Workings: Square of 9 = 81. Sum of digits of square: 8 + 1 = 9) 

5.       Define a class and store the given city names in a single dimensional array. Sort these names in alphabetical order using the Bubble Sort technique only.

INPUT : Delhi, Bangalore, Agra, Mumbai, Calcutta

OUTPUT : Agra, Bangalore, Calcutta, Delhi, Mumbai

6.       Write the following two programs separately

i. Write a program that encodes a word in Piglatin. To translate word into Piglatin word, convert the word into uppercase and then place the first vowel of the original word as the start of the new word along with the remaining alphabets. The alphabets present before the vowel being shifted towards the end followed by “AY”.

Sample Input(1): London Sample Output(1): ONDONLAY

Sample Input(2): Olympics Sample Output(2): OLYMPICSAY

ii. Write a program to assign a full path and file name as given below. Using library functions,extract and output the file path, file name and file extension separately as shown.

Input C:\Users\adm in\Pictures\flower.jpg

Output Path: C:\Users\admin\Pictures\

File name: flower

Extension: jpg

SOLVE THE QUESTIONS AND SUBMIT BY 25/06/2018