This introduction covers Putting Things in Order within Binary Search for GCSE Computer Science. Revise Binary Search in 3.1 Fundamentals of Algorithms for GCSE Computer Science with 15 exam-style questions and 10 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 2 of 9 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
Putting Things in Order
Bubble sort is like bubbles rising in water - compare neighbours, swap if wrong order, biggest values "bubble up" to the end. Keep passing through until no swaps needed. Insertion sort is like sorting cards in your hand - pick each card and insert it into the correct position among the cards you've already sorted. Merge sort is like sorting by splitting a deck in half repeatedly, then merging back in order.
Practice questions for Binary Search
Which of the following is a requirement before binary search can be used?
Describe how a binary search algorithm finds a target value in a sorted list.