Binary Search
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What is Binary Search?
Given a sorted array and a target, return the index of the target or -1 if not found. You repeatedly halve the search space by comparing the middle element to the target. This is the simplest form of binary search and the one you must be able to write without mistakes before moving to harder variants.
Free resources to learn Binary Search
More in stage 7: Binary Search
Binary Search: common questions
Can I learn Binary Search in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Binary Search in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Binary Search tutorial for beginners?
It is lesson 34 of 137 in the free LeetCode roadmap, in stage 7, Binary Search. If you are new to LeetCode, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.