Implementing a Selection Sort Algorithm

Implementing a Selection Sort Algorithm

Introduction

This tutorial will guide you through implementing a selection sort algorithm to sort an array of numbers.

Step 1: Define the Problem

We are given an array of numbers and we need to sort it in ascending order.

Step 2: Initialize the Array

We will initialize the array with some unsorted numbers.

Step 3: Iterate Through the Array

We will iterate through the array and find the minimum element in the unsorted part of the array.

Step 4: Swap the Elements

We will swap the found minimum element with the first element of the unsorted part of the array.

Step 5: Repeat the Process

We will repeat the process until the array is sorted.

Example Code

def selection_sort(array):
    for i in range(len(array)):
        min_idx = i
        for j in range(i + 1, len(array)):
            if array[j] < array[min_idx] :
                min_idx = j
        array[i], array[min_idx] = array[min_idx], array[i]
    return array
print(selection_sort([64, 34, 25, 12, 22, 11, 90]))  # Output: [11, 12, 22, 25, 34, 64, 90]

Conclusion

In this tutorial, we learned how to implement a selection sort algorithm to sort an array of numbers.