Binary search algorithm. Binary Search Algorithm Example & Time Complexity. This powerful technique dramatically reduces the search time and Explore Binary Search in data structures, learn the algorithm, types, advantages, and disadvantages, plus applications and complexity analysis in this comprehensive guide. In binary search, the middle element in the list is found before comparing with the key value you are searching for. This is based on the idea of ordered searching where the algorithm divides the sorted list into two Binary search is a fundamental searching algorithm used to efficiently locate a target value within a sorted array or list. Binary search is a method that allows for quicker search of something by splitting the search interval into two. It follows a divide-and-conquer approach, systematically reducing the search space in each iteration by half. It divides the array in half at each step. 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