Binary Search in Python Step by Step | Iterative Method Tutorial | Programs | Algorithms

Published: 16 December 2025
on channel: Amulya's Academy

502

This video explains how to implement the binary search algorithm in Python using an iterative approach. It begins by introducing binary search and discussing the required input, which includes a sorted list of numbers and a target element. The video demonstrates how to take user input for the list size, the sorted elements, and the target value.

Next, the concept of binary search is explained in detail, including the use of two pointers, low and high, to represent the search space. The process of finding the middle element, comparing it with the target, and reducing the search range by half at each step is clearly described. The logic for handling different cases, such as when the target is greater than, less than, or equal to the middle element, is also covered.

The tutorial then walks through writing a binary search function in Python using a while loop. It explains how the function returns the index of the target element if found, or minus one if the target is not present in the list. Finally, the video shows how to call the function, handle the returned result, and display appropriate output. The tutorial concludes with example executions and a brief wrap-up.

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