Notes for B2.4.2 Constructing and Tracing Algorithms for Linear and Binary Search - IB | RevisionDojo
B2.4.2 Constructing and Tracing Algorithms for Linear and Binary Search Notes
Constructing and Tracing Algorithms for Linear and Binary Search
Linear Search: A Simple Yet Powerful Approach
Initialize a variable foundIndex to -1 to indicate that the target has not been found.
Iterate through each element in the list:
If the current element matches the target, update foundIndex to the current index and break the loop.
Return foundIndex. If it remains -1, the target is not in the list.
Tip
When choosing a search algorithm, always consider whether the data is sorted.
Binary search is only effective on sorted datasets.
Practical Applications of Search Algorithms
Linear Search:
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Note
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Note
Introduction to Search Algorithms
Search algorithms are fundamental techniques used to find specific elements within a collection of data.
They are essential in various applications, from finding a contact in your phone to searching for a product in an online store.
The two most common search algorithms are linear search and binary search.
DefinitionSearch AlgorithmA method or process used to find a specific element or value within a collection of data.
AnalogyThink of search algorithms like looking for a book in a library. Linear search is like checking every book one by one, while binary search is like using the library's catalog to quickly narrow down the section.
ExampleWhen you use the 'Find' feature in a text document, you're using a form of linear search.
