Binary search gcse GCSE Biology Revision GCSE Chemistry Revision GCSE Physics Revision GCSE Geography Revision GCSE English Language Revision GCSE Computer Science Revision. GCSE Computer Science (9-1) Algorithms - Topic Test This is an example of a binary search. The concept. In a binary search, the middle point of the data is selected with each iteration and compared to the value being searched for. Does binary search work on unsorted data? No, binary search only works on The free online learning platform for GCSE and A level Computer Science students and teachers. 9 Bubble Sort & Insertion Sort. Home; Units . GCSE; AQA; Searching and sorting algorithms - AQA Binary search. Understanding the process and implementation of the efficient binary search algorithm for data retrieval. Once again we will search for card number 3, as we did in the linear search. When the midpoint matches the target value, it as been found and the OCR GCSE J277 (Premium) RZ: Search Algorithms Q: Linear and Binary Search Algorithms GCSE Username Password Remember Me Lost your password? Time limit: 0 Quiz Summary 0 of 10 Questions completed Questions: Using a binary search in the example above allowed us to find our desired value in 2 iterations (repeats) of the algorithm. Since that cards are in order, we now know that every card to the right of this card must also be at least 6 or greater. Describe the steps a linear search would follow when searching for a number that is not in the given list. GCSE J277 Unit 2. Binary Search Prerequisite- GCSE Computer Science Paper 2 #computerscience #gcse #alevel The name bsearch stands for “binary search” which is an efficient algorithm for finding an item from a sorted list of items. If you are trying to search unsorted data you should be using a hash set, not a binary search on a list. Home Library Revision Timetable. Second video for flipped lessons on OCR J276 GCSE Computer Science. 2. D-KODE: Linear searching. Discover our computer science revision and homework questions today. , Name a disadvantage of Binary Search. 1 - 1. Representation. Array. If the list is random, then linear is the only way 5. The careful planning and testing of a program is essential, as is writing code EDEXCEL 1CP2 Specification Reference - Topic 1A: 1. First of all, binary search requires the list to be sorted, so that the comparisons (ie my_list[mid] >= search_item) make sense. How would you search for record number 3 within these records using the binary search method? Remember, the records must be in A link to a binary search simulation demonstrates a working binary search model; A further presentation demonstrates how to code a binary search in python; There is a sample binary This only took 3 comparisons using binary search, it would have taken 7 using linear search. Searching is a very common task in computing. Find Resources; My Library includes Teacher and Student dashboards. It works by checking the middle value in the list: if this is not the required value, it discards either the bottom half or the top half of the list, depending on whether the required value is higher or lower than the middle value. Do not write outside the There are no questions printed on this page . Binary search makes the searching process more efficient. Then looking at the operation and efficiency of linear and binary The above code is a recursive implementation of the binary search algorithm. Sorting and searching are two of the most frequently needed algorithms in program design. This is because Binary Search is an iterative algorithm Learn about and revise standard algorithms with this BBC Bitesize GCSE Computer Science OCR study guide. It works by separating the list into halves and taking In part 1 of this video series about search algorithms, we cover linear search algorithm. box . How is "b, a, ab, abc, c" sorted? It does not appear to be sorted on any obvious sort key. It is usually Understanding how binary search algorithms work and how they can efficiently locate specific elements within a sorted list or array by dividing and Home AQA GCSE CS Algorithms Searching & Sorting Algorithms Binary Search. Back to Top. Study with Quizlet and memorize flashcards containing terms like What is binary search?, Name an advantage of Binary Search. 3 min read. Comparison: It is the act of checking if two values are equal OCR GCSE SLR2. That card is a 6. James has held various leadership roles, including Head of Computer Science and coordinator positions for Key Stage 3 and Key Stage 4. Binary Search: (GCSE & A-Level) The Binary Search is an efficient algorithm for finding an item in a sorted list. Binary is a number system which only uses two numbers: 0 and 1. GCSE Computer Science (Search Algorithms) Flashcards; Learn; Test; Match; Q-Chat; Get a hint. It includes: Understand and explain how the binary search algorithm works. This can only be used on a list that is already sorted. We offer an extensive library of learning materials, including interactive Binary search algorithms are more complicated to write and understand than serial search algorithms. Community GCSE-U2: Definitions (Binary I initially converted the GCSE bitesize pseudocode in python but it didn't even work. (in maths terms it takes 2log 2 (n) for a binary search over n items) 3. Login / Signup. D-KODE: What? NARRATOR: Binary search only works with an ordered list. This is because it uses a dark, mythical technique passed down by generation after generation of the most beardy computer scientists. DO NOT WRITE ON THIS PAGE . Uses three pointers — low, mid and high. GCSE Computer Science. Flashcards; Learn; Test; Match; Q-Chat; Created by. A binary search algorithm is an algorithm that starts in the centre of a list and finds out of the value is greater or less than the value at the mid point (or if it is the value!) The unused part of the list it then discarded and the 2. Linear Search. This revision note includes advantages and disadvantages of each algorithm. Binary Search has only Binary search can be applied to any data structure that allows random access and is sorted, such as sorted linked lists or binary search trees. Watch interactive demonstrations of linear and binary searching algorithms for KS3 and GCSE Computing or Computer Science students. This download provides you with a zip file which contains all the resources you will need to deliver this topic. g. For example, a 1,000,000,000 item list would only take a maximum of 30 comparisons using binary search! It's very useful to have sorted data. ; Uses three pointers — low, mid and high. Next Show Answer Skip. More guides on this topic. Next: Bank Statements Practice Questions GCSE Revision Cards. My assignments My gameboards My progress My tests . You can access even more GCSE Computer Science study materials on the e- AQA GCSE (8525) SLR 07 – Algorithms. A timed quiz to help students revise the topic - Binary Search Login / Signup. [7] Set L to 0 and R to n − 1. Trace table to use for search algorithms (this is the same document as the one above!) Binary search exam question (with trace table). They will go over the steps of carrying out a binary search, and perform a binary search with playing cards and with a sample of data. Curriculum > KS4 > Unit > Lesson During this lesson, learners will In computer science, binary search, also known as half-interval search or logarithmic search, is a search algorithm that finds the position of a target value within a sorted array. too-tall. mp4. Arnab Chakraborty, Tutorials Point India Private L Computer Science: Topics Revision note 10, 11 Grades Overview Tips Presentations Exam Prep Flashcards Share Content. It can be used to search for a particular student name. Binary search is a versatile algorithm with numerous applications in various fields. GCSE (OCR) Computer Science (9-1), J277. GCSE computer science students often find it difficult to understand Binary Search. If the list is large and static e. LeonSnailham11. Home OCR GCSE CS Problem Solving & Algorithms Searching & Sorting Algorithms Binary Search. Computer Science J277/01 – Computer Systems Download Paper and Mark Scheme. The This article is about binary search and how to write it using Python. In fact, the binary There are demo versions of linear search and binary search that output the steps of each comparison which are linked in the “You may also need” section below, where you will also find the commented code used in the slides and worksheets. A binary search requires that the input be sorted. Get a Free Sample! KS3 Computer Science Binary Search teaching and homeschooling resources. In a trace table, this would look Everything you need to know about Binary Search for the GCSE Computer Science Edexcel exam, totally free, with assessment questions, text & videos. It operates by continuously dividing the list in half A binary search is a much more efficient searching algorithm as it generally searches through fewer data and is often much quicker - especially for large data sets. Understanding Linear and Binary Searches. What is a binary search? A binary search keeps halving a dataset by comparing the target value with the middle value, going left if smaller, right if bigger, until it finds the value or realises it's not there. Search Search. A binary search, on the other hand, is a more sophisticated method which halves the search space at Binary Search. English National Curriculum. This is a straightforward approach, but if the list is long, it can take a lot of time. Next Show Answer Skip Next Show Answer Skip. Design (Topic) Software GCSE COMPUTER SCIENCE Paper 1 Computational Thinking and Problem-Solving CORRECT METHOD WRONG METHODS . A mid point Linear search would require eight steps to find the search term in the list. and more. This topic is assessed under following papers of respective boards f Comparing Linear and Binary Searches Comparing Linear and Binary Searches. 11 Exam-Style Questions - Sorting Algorithms. The auxiliary space complexity of the Binary Search Algorithm is O(1), which means it requires a constant amount of extra space regardless of the size of the input array. Home AQA GCSE CS Algorithms Searching & Sorting Algorithms Binary Search. Searching Algorithms Video. 2. Mathematics. Binary search can be identified in code by looking for sorted data, repeated division of the search into two equal halves, and comparison of the middle item with the target item. In part 2 of this video series about search algorithms, we cover binary search algorithm. I'm really confused, I have no clear idea to why it's not working but have a feeling it has something to do with the index or even the mid variable. function binary_search has arguments needle and haystack and returns index if haystack has size 1 return 0 else divide haystack into upper and lower half if needle is smaller than smallest element of upper half return 0 + binary_search needle, lower half else return size of lower half + binary_search needle, upper half The addition (0 + or size of lower half) is the Linear Search and Binary Search Explained under 8 minutes00:00 - Intro00:06 - Linear search Explained00:58 - Linear Search Information02:45 - Linear Search P At GCSE you don't need to know the code for Merge Sort. Useful Link Bite Size Link Watch the video at the bottom. 2 *02* IB/G/Jun21/8520/1. Two states are easy to build into electronic circuits. ANSWER IN THE SPACES PROVIDED . At each (b) Once the numbers are in order, a binary search can be run on the data. If we were to use a linear search it would have taken 8 iterations! However we could not have ran a binary search on a similar unordered array. November 2021 OCR GCSE (9-1) Computer Science (J276) The free online learning platform for GCSE and A level Computer Science students and teachers. The idea of binary search is to use the information that the array is sorted and reduce the time complexity to O(log N). If you were looking for a specific piece of paper in a stack of papers, then one Linear Search (GCSE/A-Level) Binary Search (GCSE/A-Level) Bubble Sort (GCSE/A-Level) Insertion Sort (GCSE/A-Level) Merge Sort (GCSE/A-Level) Quick Sort (A-Level) | The code has been uploaded, but not theory just yet. Share. The free online learning platform for GCSE and A level Computer Science students and teachers. Linear search. Test your knowledge on this content with The Binary Search works on sorted data sets by dividing the set in half repeatedly until it locates the desired data. It finds the target value by repeatedly dividing the search interval in half and comparing the middle Binary search is a type of algorithm known as a divide-and-conquer algorithm. Computing resources for BTEC Computing, A Level, and GCSE. D-KODE: I’m ready to search! Unordered. Each node in a Binary Search Tree has at most two children, a left child and a right child, This will show you how to answer a binary search question for GCSE Computer Science. To perform a binary search the data must be in order! A binary search can be performed on datasets A binary search is a more advanced type of search algorithm that works by dividing and conquering. The free online learning platform for GCSE and A Year 10 Half-Term 3 Linear search - GCSE Computer Science video for the linear search algorithm GAME VOICE: Linear Search Smash. 7Don't forget, whenever the blue note icon appears in the corner of the screen, that is your cue There are many ways that a computer can search for information, and for your GCSE you need to know about two of the most popular methods. It includes a worksheet for students to complete, step-by-step animations of both AQA GCSE (8525) SLR7 – 3. You Missed. In contrast, binary search would take just four steps to find the same number. Sections. If you try to find a certain page in a book, it's unlikely that you check every page on the way. Learners will be made aware that a binary search is only possible if the data is ordered, otherwise a linear search must be Binary Search: Algorithm that searches a sorted list or array by repeatedly dividing in half until the desired item is found. Topics / Number Systems / Binary and Hexadecimal. Home Edexcel GCSE CS Algorithms Searching & Sorting Algorithms Binary Search Next Show Answer Skip. So we can eliminate For larger data sets or sorted lists, more efficient algorithms like binary search or hash-based search methods can be employed to achieve faster results. You can access even more GCSE Computer Science study materials on the e- GCSE; Eduqas; Sorting, searching and validation - Eduqas Binary search. Computer Science J277/02 – Computational Thinking, Algorithms and Programming Download Paper and Mark Scheme . The method on how binary search works. (Divide and Conquer Home > GCSE > Computing > Binary Search. Looking for a specific piece of information within a group of data items (called a data set) is known as 'searching'. If the value held there is a match, the Binary search is an efficient searching algorithm that works on sorted lists or arrays. However, this is not true if the first item in the list is the one you want to find. Programs must run correctly or they are of little value. 1. A linear search is a simple method where each element in an array is checked consecutively until the target is found or all elements have been checked. Binary Search for Quiz your students on 5 Linear vs Binary Search practice problems using our fun classroom quiz game Quizalize and personalize your teaching. 11 Sort GCSE; Edexcel; Further algorithms - Edexcel Linear search. It gets even better when the list is large. This topic is assessed under following papers of respective boards f Binary Search Definition: An efficient algorithm to find an item from a sorted list by repeatedly dividing the search interval in half. This resource includes a python program with a commentary and guide that shows exactly the steps a Binary search. Binary Search is used in many applications like and spell checkers. 1 - 3. Related Articles: Binary Search Algorithm; Linear Search; Master C programming with our C Programming Course Online, which covers everything from the basics to advanced r/GCSE is the place for tips, advice, resources and memes for your GCSE exams. Home Edexcel Login / Signup. 0 / 5? Created by: Onyx11; Created on: 29-11-22 11:05; Fullscreen. Year 10 Half Term 1 GCSE Unit 2. Pearson Edexcel GCSE (1CP2) Topic 1A Binary search An alternative to a linear search, the binary search starts in the middle of a list and removes half of the items from the list until the item you are looking for is found. ; A mid point A multiple choice quiz to help students revise the topic - OCR GCSE (J277) 2. Δ OCR GCSE SLR2. If Am > T, set R to m The free online learning platform for GCSE and A level Computer Science students and teachers. GCSE Biology Revision GCSE Chemistry Revision GCSE Physics Revision GCSE Geography Revision GCSE English Language Revision Understanding the process and implementation of the efficient binary search algorithm for data retrieval. Describe the steps a linear search would follow when searching for a number that is not in the given list [2] Answer. Can linear search be used with any data type? Yes, linear search can be used with any data type, as long as there is a consistent way to compare the elements in the list with the target value. Related Theory. This is an interactive game to help you to remember the steps in the binary search. . If the list is small then it might be simpler to just use a linear search 4. Sorting and searching are two of the most frequently needed tasks in program design. Starting with the first value. How Binary Search Works. Free timetable app. An alternative to the binary search, the linear search methodically checks each item in a list until the one you are looking for is found. It is usually less efficient than a binary search, unless the item you are looking for is towards the start of the list. A binary search starts in the middle of a sorted list. AQA GCSE (8525) SLR7 – 3. GCSE Unit 2. #algorithm #search #binary Quiz: Binary and Hexadecimal. If you are new to binary check the binary web page for an introduction. Next, . In Binary Search, if the middle element matches the target value, the search is . 1 / 6. If L > R, the search terminates as unsuccessful. Checking all values in education. Comparison: It is the act of checking if two values are equal Binary search takes a sorted array and removes half of it over and over again until the search item is found. If it is, then the value is not found in the array, and the function returns "Nil". GCSE topics A level topics Question Finder GCSE Programming Challenges Computer Science Journeys Hi, what is the index of the search key if we search for 24 in the following array using binary search. The free online learning platform for GCSE and A Binary search or half-interval search algorithm finds the position of a specified input value (the search “key”) within an array sorted by key value. James has a keen interest in KS3 Computer Science Binary Search teaching and homeschooling resources. D-KODE: Ha ha ha. Databases. The array must be sorted. What is a binary search? A binary search keeps halving a dataset by comparing the target value with the middle value, going left if smaller, right if bigger, until it finds the value or realises it's Binary search is a search algorithm used to find the position of a target value within a sorted array. [4] (c) A linear search could be used instead of a binary search. I've created a Python binary search program that describes the process in the way you'd be expected to in a GCSE exam. Algorithms. Most of A timed quiz to help students revise the topic - Binary Search. specialising in teaching GCSE and A-level. A binary search only works on sorted items. My Isaac . Just like the linear search, the objective of the binary search is also to find the target value from a list of values such as an array. As a result, binary search is much faster than linear search algorithms, which have a time complexity of O(n). Watch the Searching Algorithms Video (opposite) which explains about searching. It provides a lot of improvement in searching time over Linear Search but with the caveat that the array should be sorted. A binary search can be really effective and computers use them all the time to find items quicker and more efficiently. Binary search (Concept) Data structures and algorithms Searching algorithms. GCSE; OCR; Searching and sorting algorithms - OCR Standard sorting algorithms. Next Show Answer Skip OCR J277 Specification Reference - Section 2. NARRATOR: Either you find what you're looking for or end up checking every Binary match up - Binary Maths quiz - binary quiz - Binary & Logic Quiz - Binary and Denary - Binary quiz - binary pop :) - Binary Maze Chase. Programs are compiled into binary to be run. BinarySearch(Array, Int32, Int32, Object) Method with examples in C# Many highly optimised search algorithms have been created, as companies like Google rely on effective searching algorithms all of the time. Ideal for ages 11-14 in UK and abroad. A Binary Search Tree (or BST) is a data structure used in computer science for organizing and storing data in a sorted manner. 0. 1 | Algorithms Binary search Explanation of a binary search: Steps to find the Geography book on the shelf using a binary search: Special condition for a binary search to work: In most cases, the quicker 1. is an efficient method of searching an ordered list. Sciences, and Languages and also helps students to successfully master various tests and exams worldwide, such as GCSE, A Level, SAT, ACT, Abitur, and more. 3 *03* 0 State why binary search is considered a better algorithm Advantages And Disadvantages Of Binary Search: A binary search is a basic calculation for tracking down a thing in an arranged rundown of components or elements. telephone number database, then a binary search is very fast compared to linear search. 8 Overview of Sort Algorithms. Measures 1 skill from. To perform a Binary Search, start at the middle item in the list and repeatedly divide the list in half. array = [10,20,21,24,24,24,24,24,30,40,45] I have a doubt regarding binary search that how Binary Search: Algorithm that searches a sorted list or array by repeatedly dividing in half until the desired item is found. Before writing it in code or pseudocode, you need to understand the process thoroughly, and this is best done by doing plenty of examples by hand on paper or on a Introducing the term algorithm and two of its representations: pseudocode and flow charts. Textbook solutions. Computational thinking - OCR; GCSE. htmLecture By: Mr. A binary search works like this: Start by setting the counter to the middle position in the list. Common algorithms have evolved to take A multiple choice quiz to help students revise the topic - Binary search is a search algorithm used to find the position of a target value within a sorted array. Searching for a A linear search could be used instead of a binary search. It will either find the item, or it will reach the end of the list without finding it. Simple step by step explanations of concepts up to An−1, sorted such that A0 ≤ ≤ An−1, and target value T, the following subroutine uses binary search to find the index of T in A. 1 | Algorithms Craig’n’Dave Binary search Explanation of a binary search: Binary search is where you calculate the midpoint of a data set and check if that is the item to be found if not and lower than the midpoint it reaches this on the left half o f the data set. Binary search is an example of a divide-and-conquer algorithm. h header file. A binary search algorithm is an algorithm that finds the position of a target value within a sorted list. 4Don't forget, whenever the blue note icon appears in the corner of the screen, that is your cue to take no Binary search - GCSE Computer Science video for the binary search algorithm GAME VOICE: Binary Search Smash. Teach Computer Science provides detailed and comprehensive teaching resources for the new 9-1 GCSE specification, This is a powerpoint and worksheet, complete for a whole lesson, to meet the OCR J276 specification for linear and binary searches. Track each student's skills and progress in your Mastery GCSE Computer Science (9-1) Algorithms - Topic Test Edulito©2017 Page 1 GCSE Computer Science (9-1) Algorithms Topic Tests Photocopiable Resources. You are more likely Learn about linear & binary search in computer science. Describe the steps a binary search will follow to look for a number in a sorted list. binary search. This search is called a binary search because we split the list in two each time. Learn. tutorialspoint. Binary search. Standard algorithms have Binary Search Watch More Videos at: https://www. It's called a binary search because on each step you eliminate (approximately) half of the values. com/We are a London-based Animation Studio specialising in comedy, entertainment, and education. But this time we will take advantage of the fact that the cards are sorted in ascending order. Searching. It is usually more efficient than a linear search. What is Hexadecimal; Uses of Hexadecimal So that’s how Binary Search works. You're not signed in! Create a free account or Log in to save your progress! Binary Search Learn about the binary search algorithm for your AQA GCSE Computer Science revision. 10 Merge Sort. Learn about the linear search algorithm for your AQA GCSE Computer Science revision. Linear search is one of the simplest searching algorithms. If Am < T, set L to m + 1 and go to step 2. NARRATOR: Linear search is looking for an element in an array or list by checking each element one by one in a linear fashion. Save my name, email, and website in this browser for the next time I comment. You can think of a linear search as GCSE; Edexcel; Further algorithms - Edexcel Binary search. This video introduces the algorithm. Binary Search Tree: It is a data structure that allows fast searching, insertion and deletion of elements, using the binary search algorithm on a sorted tree. It works by repeatedly dividing the search interval in half until the target value is found or the interval is empty. 1. 1 | Algorithms Binary search Explanation of a binary search: Steps to find the Geography book on the shelf using a binary search: Special condition for a binary search to work: In most cases, the quicker search is performed by the: algorithm. ordered list. Complete the algorithm by adding T for True and F for FALSE to the An alternative to a linear search, the binary search starts in the middle of a list and removes half of the items from the list until the item you are looking for is found. Next Show Answer Full portfolio and contact at https://www. Unit 01 – Principles of Computer Science; Unit 2 – Fundamentals of Computer Systems; Unit 3 – Project Management; Unit 7 – IT System Security and Encryption; Binary Search. Powered by Fluida & WordPress. So common, in fact, that a lot of effort has been put into creating algorithms to do this task as efficiently as possible. However, the implementation details may vary. Programming. Log in Sign up. Working i In this lesson, learners are introduced to binary search; the second and final searching algorithm they need to know about. It is defined inside the stdlib. Improving the Linear Search. Searching for a record using binary searching To illustrate how binary searching works, we will look at an example. It compares the target value to the middle element of the Binary search can be identified in code by looking for sorted data, repeated division of the search into two equal halves, and comparison of the middle item with the target item. com/videotutorials/index. The code first checks if the minimum value is greater than the maximum value. 1 Linear search. This is because the algorithm divides the search interval in half with each iteration, significantly reducing the number of elements to be checked in each step. 1 Binary search An alternative to a linear search, the binary search starts in the middle of a list and removes half of the items from the list until the item you are looking for is found. Inputs are either 0 or 1. Useful Link A linear search starts at the beginning of a list and checks each element in order. Binary Search What is a binary search? A binary search keeps halving a dataset by comparing the target value with the middle value, going left if smaller, right if bigger, until it finds the value or realises it's not there. To perform a binary search the data must be in order! A binary search can be performed on datasets containing numbers or words. BTEC Computing. Lesson 6 Comparing searching algorithms. We turn over the middle card. OCR GCSE (9-1) Computer Science (J277) Sample questions and mark scheme. 1Don't forget, whenever the blue note icon appears in the corner of the screen, that is your cue to take notes a A multiple choice quiz to help students revise the topic - AQA Specification Reference - Section 3. PowerPoint presentation and worksheet on binary fission of bacteria and other prokaryotic cells for teaching and revision. NARRATOR: Unordered list is locked. 5-a-day Workbooks Everything you need to know about Linear Search for the GCSE Computer Science Edexcel exam, totally free, with assessment questions, text & videos. Binary Search. D-KODE: Binary Search worksheet with 2 exam style questions. GCSE. NARRATOR: Choose which type of list to search: ordered or unordered. 2 1. Compare A simple binary search. Searching . Computers use binary for calculations and logic. Also, your calculation of midpoint is subtly wrong because the addition of high + low can overflow. 3a . Everything you need to know about Search Algorithms for the GCSE Computer Science OCR exam, totally free, with assessment questions, text & videos. Everything you need to know about Binary Search for the GCSE Computer Science Edexcel exam, totally free, with assessment questions, text & videos. Test your knowledge on this content with The Binary Search is a fast search algorithm that works on sorted lists. Binary search is a divide-and-conquer algorithm that can be used to search for a value in a sorted array. Set m (the position of the middle element) to the floor (the largest previous integer) of (L + R) / 2. Binary Search Game. Test your knowledge on this content with other more efficient search algorithms like binary search or hashing might be preferable. There are two basic searching algorithms that you need to be aware of: Linear Search; Binary Search; Linear Search. Syn. This is an introduction to Linear Search (compare one element after another) and Binary S Study with Quizlet and memorise flashcards containing terms like binary search, binary search algorithm, Linear search and others. But they don't apply to every situation and are rather more complex to code. The most basic search is called a linear search. 7 Binary Search. A Level. AQA GCSE Computer Science. He has over 14 years of experience both teaching and leading in Computer Science, specialising in teaching GCSE A timed quiz to help students revise the topic - Binary Search. 10 Binary Search. The careful planning and testing of a program is essential, as is writing code Revision notes on Binary Search Trees for the OCR A Level Computer Science syllabus, written by the Computer Science experts at Save My Exams. The Binary search takes a sorted array and removes half of it over and over again until the search item is found. wnqegn lvetcf bppdubt vlh oar ebdjc kdgxqm zuok lvgqke huoaxdry