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coding-quiz-2

---
id: coding-quiz-2
title: Coding Quiz - Implement Binary Search
description: Write a function to find the index of a target value in a list using binary search.
tags:
  - Coding Quiz
  - Binary Search
  - Python
sidebar_position: 6
isPublic: false
---

# Coding Quiz - Implement Binary Search

Based on what you have learned so far, implement the `binary search` algorithm yourself.

Given a `sorted list of numbers` and a `target value`, you need to write a function that uses the binary search algorithm to find the `index of the target value`.

If the target value is not present in the list, return `-1`.

<br />

```python title="Write the Code"
def solution(numbers, target):
    # Write your code here
    return


Constraints​

  • numbers are sorted in ascending order.

  • numbers do not contain duplicate values.

  • target is an integer.



Input and Output Examples​

  • Input: numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9], target = 4

  • Output: 3


  • Input: numbers = [10, 20, 30, 40, 50], target = 30

  • Output: 2

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