---
id: 698dcc2c7932b3cc4b19c927
title: Binary Search in Code
challengeType: 11
videoId: mg7F5D8Wk5o
dashedName: binary-search-in-code
---

# --description--

In this video, you will code out the binary search algorithm using Python.

# --questions--

## --text--

Why was the `while first <= last:` condition used in the solution?

## --answers--

To ensure only the first half of the array is ever checked.

---

To make the loop run forever until manually stopped.

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To skip checking the last element in the search range.

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To keep searching while there are still elements in the range and stop when the range is empty.

## --video-solution--

4