Revision Tour II

Appeared in 10 of the 11 available papers.

Examined in

10 of 11 papers

Appears almost every year — treat as core

Typically worth

26.5 marks

Average per paper it appears in · 265 marks in total

Usual form

MCQ

42% of this chapter's 69 questions

Needs a diagram

2 questions carry a figure — practise drawing them

Question-type distribution

MCQ29
Program26
Output10
Difference3
Definition1

Most frequent topics

The ternary operator 4Converting do-while to for 3if-else to ternary 3Converting while to for 2Nested loops 2Empty loop body (semicolon trap) 2Scanner class methods 2Infinite loops 2

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Print chapter question bank

Showing 19 of 69 matching questions (265 marks).

19 questions

52019

ProgramHard15 marks

Using the switch-case statement, write a menu-driven program to do the following: (a) To generate and print letters from A to Z and their Unicode: Letters Unicode A 65 B 66 ... Z 90 (b) Display the following pattern using an iteration (looping) statement: 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5

92019

ProgramHard15 marks

A tech number has an even number of digits. If the number is split in two halves, then the square of the sum of these halves is equal to the number itself. Write a program to generate and print all four-digit tech numbers. Example: consider the number 3025 Square of sum of the halves of 3025 = (30 + 25)^2 = (55)^2 = 3025, so 3025 is a tech number.

2(b)2018

DifferenceModerate2 marks

State the difference between while and do while loop.

3(f)2018

ProgramModerate2 marks

Convert the following if else if construct into switch case: if(var == 1) System.out.println("good"); else if(var == 2) System.out.println("better"); else if(var == 3) System.out.println("best"); else System.out.println("invalid");

3(i)2018

ProgramModerate2 marks

Rewrite the following using ternary operator: if(bill > 10000) discount = bill * 10.0 / 100; else discount = bill * 5.0 / 100;

3(j)2018

OutputHard2 marks

Give the output of the following program segment and also mention how many times the loop is executed: int i; for(i = 5; i > 10; i++) System.out.println(i); System.out.println(i * 4);

52018

ProgramHard15 marks

Write a program to input a number and check and print whether it is a Pronic number or not. A Pronic number is a number which is the product of two consecutive integers. Examples: 12 = 3 x 4 20 = 4 x 5 42 = 6 x 7

82018

ProgramHard15 marks

Write a menu-driven program to display the pattern as per user’s choice. Pattern 1 ABCDE ABCD ABC AB A Pattern 2 B LL UUU EEEE For an incorrect choice, an appropriate error message should be displayed.

2(d)2017

OutputHard2 marks

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);

3(d)2017

ProgramModerate2 marks

Convert the following do-while loop into a for loop: int i = 1; int d = 5; do { d = d * 2; System.out.println(d); i++; } while(i <= 5);

3(i)2017

OutputHard2 marks

Analyse the given program segment and answer the following questions: for(int i = 3; i <= 4; i++) { for(int j = 2; j < i; j++) { System.out.print(""); } System.out.println("WIN"); } (i) How many times does the inner loop execute? (ii) Write the output of the program segment.

3(j)2017

DifferenceModerate2 marks

What is the difference between the Scanner class functions next() and nextLine()?

52017

ProgramHard15 marks

Write a program to accept a number and check and display whether it is a spy number or not. A number is spy if the sum of its digits equals the product of its digits. Example: consider the number 1124. Sum of the digits = 1 + 1 + 2 + 4 = 8 Product of the digits = 1 x 1 x 2 x 4 = 8

62017

ProgramHard15 marks

Using the switch statement, write a menu-driven program for the following: (i) To find and display the sum of the series given below: S = x^1 - x^2 + x^3 - x^4 + x^5 ... - x^20 (where x = 2) (ii) To display the following series: 1 11 111 1111 11111 For an incorrect choice, an appropriate error message should be displayed.

3(e)2016

ProgramModerate2 marks

Rewrite the following using ternary operator: if(x % 2 == 0) System.out.print("EVEN"); else System.out.print("ODD");

3(f)2016

ProgramModerate2 marks

Convert the following while loop to the corresponding for loop: int m = 5, n = 10; while(n >= 1) { System.out.println(m * n); n--; }

3(h)2016

OutputHard2 marks

Analyse the given program segment and answer the following questions: for(int m = 5; m <= 20; m += 5) { if(m % 3 == 0) break; else if(m % 5 == 0) System.out.println(m); continue; } (i) Write the output of the program segment. (ii) How many times does the body of the loop get executed?

52016

ProgramHard15 marks

Using the switch statement, write a menu-driven program for the following: (i) To print Floyd's triangle (given below): 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 (ii) To display the following pattern: I IC ICS ICSE For an incorrect option, an appropriate error message should be displayed.

82016

ProgramHard15 marks

Write a program to accept a number and check and display whether it is a Niven number or not. A Niven number is a number which is divisible by the sum of its digits. Example: consider the number 126. Sum of its digits is 1 + 2 + 6 = 9, and 126 is divisible by 9.