How to Develop a Python Program to Input 10 Numbers and Output the 3 Largest Numbers

Introduction

In this guide, we will walk through the process of creating a Python program that inputs 10 numbers and outputs the three largest numbers using a straightforward and efficient method. This tutorial is designed for beginners interested in Python programming and covers the essential steps required to achieve this functionality.

Step-by-Step Guide

To develop a Python program that inputs 10 numbers and outputs the three largest numbers, follow the steps below:

Step 1: Initialize an Empty List to Store the Numbers

First, we need to initialize an empty list to store the input numbers.

numbers  []

Step 2: Input 10 Numbers

Next, we will use a loop to gather 10 numbers from the user. Python's `for` loop is a convenient way to handle this task.

for i in range(10):    num  float(input("Enter a number: "))    (num)

Step 3: Sort the Numbers in Descending Order

The `sort()` method in Python can be used to sort the list in descending order with the `reverseTrue` parameter.

(reverseTrue)

Step 4: Output the Top Three Numbers

Finally, we need to retrieve the top three numbers from the sorted list and print them.

print("The three largest numbers are:", numbers[:3])

Alternative Approach: Using Bubble Sort

If you prefer a different sorting method, such as the Bubble Sort algorithm, you can implement the following steps:

Step 1: Read 10 Numbers into an Array

numbers  []for i in range(10):    num  float(input("Enter a number: "))    (num)

Step 2: Sort the Array Using Bubble Sort

Bubble Sort is a simple comparison-based algorithm. Here is a Python implementation of Bubble Sort to sort the array in descending order.

def bubble_sort_descending(arr):    n  len(arr)    for i in range(n):        for j in range(0, n-i-1):            if arr[j] 

Step 3: Print the Last Three Elements of the Array

print("The three largest numbers are:", numbers[-3:])

Conclusion

This guide has demonstrated how to create a Python program that inputs 10 numbers and outputs the three largest numbers using both an efficient built-in sorting method and a basic sorting algorithm. Whether you want a simple solution using Python's built-in functions or a more traditional approach like Bubble Sort, both methods work effectively.

Keywords

Python programming input numbers sort algorithm