LeetCode 704 Solution | Binary Search Explained with Example | Java

Published: 30 October 2025
on channel: Engineering life

LeetCode 704 Solution | Binary Search Explained with Example | Java

Solution: https://leetcode.com/problems/binary-...

In this video, we solve LeetCode 704 – Binary Search step by step.
You’ll learn how the binary search algorithm works, see a detailed walkthrough with examples, and understand how to implement it efficiently in Java.

🔹 Problem: Given a sorted array and a target, return the index if the target exists, otherwise return -1.
🔹 Approach: Binary Search (Divide and Conquer)
🔹 Time Complexity: O(log n)
🔹 Space Complexity: O(1)

We’ll cover:
✅ Problem explanation
✅ Step-by-step dry run example
✅ Binary Search code implementation in Java
✅ Why binary search is better than linear search

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