2022 Paper 1 Revision Quiz

Recursion

1. In Recursion, the part of the code which runs itself is called?

	General Case.
→	Correct
	Base Case.
→	Incorrect
	Repeating Case.
→	Incorrect
	Recursive Case.
→	Incorrect

2. In Recursion, the condition which stops the recursive calls is called?

	General Case.
→	Correct
	Base Case.
→	Incorrect
	Repeating Case.
→	Incorrect
	Recursive Case.
→	Incorrect

3. Look at this sample code:

1: public int Fact(int num)
2: {
3:   if (num == 0)
4:       return 1;
5:   else
6:       return num * Fact(num-1);
7: }

Which of these lines are the General Case?

	3
→	Incorrect
	4
→	Incorrect
	5
→	Incorrect
	6
→	Correct

4. Look at this sample code:

1: public int Fact(int num)
2: {
3:   if (num == 0)
4:       return 1;
5:   else
6:       return num * Fact(num-1);
7: }

Which of these lines are the Base Case?

	3
→	Almost, this is the condition which causes the base case
	4
→	Correct
	5
→	Incorrect
	6
→	Incorrect

5. Look at this sample code:

 1: public int Fact(int num)
 2: {
 3:   if (num == 0)
 4:       return 1;
 5:   else
 6:       return num * Fact(num-1);
 7: }

The function Fact is run with the parameter of 5.

Fact(5);

What is the return value for the First call:

What is the return value for the Second call:

What is the return value for the Third call:

What is the return value for the Fourth call:

What is the return value for the Fifth call:

What is the return value for the Sixth call:

What will be the final value returned for the call Fact(5):

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Arrays

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Abstract Data Types & Dynamic vs Static

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Queues

Syntax error

1. A queue is ?

	Last In First Out .
→	Incorrect
	First in First Out.
→	Correct

2. Look at this graph:

select the appropriate options below:

	The degree of vertex A is 3
→	Incorrect
	The degree of vertex D is 1
→	Incorrect
	The degree of vertex B is 3
→	Correct
	The degree of vertex E is 1
→	Correct

3. Look at this graph:

select the appropriate options below:

	Directed
→	Incorrect
	Undirected
→	Correct
	Weighted
→	Incorrect
	Unweighted
→	Correct

4. Look at this graph:

select the appropriate options below:

	Directed
→	Incorrect
	Undirected
→	Correct
	Weighted
→	Correct
	Unweighted
→	Incorrect

5. Look at this graph:

select the appropriate options below:

	Directed
→	Correct
	Undirected
→	Incorrect
	Weighted
→	Incorrect
	Unweighted
→	Correct

6. Look at this graph:

Complete the adjacency matrix:

A B C D A X B X C X D X

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Stacks

1. A stack is ?

	Last In First Out .
→	Correct
	First in First Out.
→	Incorrect

2. The stack pointer will point to?

	The location to store the next item
→	Incorrect
	Top of the stack.
→	Correct
	Bottom of the stack.
→	Incorrect

3. To add an item to the stack you?

	Pop.
→	Incorrect
	Push.
→	Correct
	Peek.
→	Incorrect

4. To remove an item from the stack you?

	Pop.
→	Correct
	Push.
→	Incorrect
	Peek.
→	Incorrect

5. To look at the top of the stack without removing it you?

	Pop.
→	Incorrect
	Push.
→	Incorrect
	Peek.
→	Correct

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Graphs

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Trees

1. Which of the following must a graph have to also be a tree?

	Not Connected
→	Incorrect
	Connected.
→	Correct
	Weighted
→	Incorrect
	Unweighted.
→	Incorrect
	Directed.
→	Incorrect
	Undirected.
→	Incorrect
	With Cycles
→	Incorrect
	Without Cycles
→	Correct

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Graph Traversal

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Searching Algorithms

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Sorting Algorithms

1. Which sorting algorithm uses 'Divide & Conquer' strategy?

	Bubble Sort.
→	Incorrect
	Merge Sort.
→	Correct
	Neither.
→	Incorrect

2. Which sorting algorithm will complete a number of passes?

	Bubble Sort.
→	Correct
	Merge Sort.
→	Incorrect
	Neither.
→	Incorrect

3. Which sorting algorithm will break a list into multiple lists containing a single value?

	Bubble Sort.
→	Incorrect
	Merge Sort.
→	Correct
	Neither.
→	Incorrect

4. Which sorting algorithm will be recursive?

	Bubble Sort.
→	Incorrect
	Merge Sort.
→	Correct
	Neither.
→	Incorrect

5. Which sorting algorithm will sort the list with N-1² comparisons?

	Bubble Sort.
→	Correct
	Merge Sort.
→	Incorrect
	Neither.
→	Incorrect

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Optimisation Algorithms

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Order of Complexity

1. Complete the following:

1) Constant  :

2)  : O(log N)

3) Linear  :

4) Linearithmic  :

5)  : O (N2)

6)  : O(kN)

7) Factorial  :

2. Complete the Order of Complexity for the following examples:

1) Finding the first item in a list  :

2)  : Logarithmic or O(log N)

3)  : Linear or O(N)

4) Merge Sort  :

5)  : Polynomial or O (N2)

6)  : Exponential or O(kN)

7) : Factorial or O(N!)

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Halting Problem

1. Complete the Halting Problem:

‘Is it possible to a program that can tell given any and its and without the program, whether it will ?’

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