Year 11 Revision: Unit 2.1-Algorithms

Identify the search algorithm

• Random search

• Binary search

• Denary search

• Next Item search

Identify the description of a linear search

• Put the elements in order, check each item in turn

• Put the elements in order, compare to the middle value, split the list in order and repeat

• Elements do not need to be in order, check each item in turn

• Elements do not need to be in order, compare to the middle value, split the list in order

  and repeat

Identify the description of a binary search

• Put the elements in order, check each item in turn

• Put the elements in order, compare to the middle value, split the list in order and repeat

• Elements do not need to be in order, check each item in turn

• Elements do not need to be in order, compare to the middle value, split the list in order

  and repeat

Define the term computational thinking

• Using a computer

• Developing an algorithm to solve a problem

• Making a computer use artificial intelligence

• Google is computational thinking

Which of the following is not a component of computational thinking?

• Abstraction

• Typing

• Decomposition

• Algorithmic thinking

Define the term abstraction within computational thinking

• Adding together numbers

• Taking a real world problem and designing a computer program that exactly replicates

  every part of that problem in the computer

• Performing multiple calculations on a list of variables

• Representing real world problems in a computer program, using symbols and removing

  unnecessary elements

Define the term decomposition within computational thinking

• The breaking down of a program until it no longer exists

• The creation of music that can be played on a computer

• The breaking down of a problem into smaller problems

• The breaking down of waste to make compost

Identify which statement describes algorithmic thinking

• Thinking like a computer

• Writing binary numbers

• Identifying the steps involved in solving a problem

• Identifying what problems need to be solved

A linear search is to be performed on the list:

How many comparisons would it take to find the number 1?

• 1

• 2

• 3

• 4

A binary search is to be performed on the list:

How many comparisons would it take to find the number 9?

• 0-1

• 2-3

• 4-5

• It can't find the number 9