DSA

Sorting Basics

Learn the fundamentals of sorting algorithms, including Bubble, Selection, and Insertion sort, and understand their O(n²) time complexity.

By TechCoder TeamLast updated: 2026-06-02
In a Nutshell

Learn the fundamentals of sorting algorithms, including Bubble, Selection, and Insertion sort, and understand their O(n²) time complexity. This hands-on tutorial focuses on practical implementation of sorting basics concepts.

Sorting Basics

Sorting is the process of arranging data in a specific order (ascending or descending). Basic sorting algorithms are easy to understand but are generally less efficient for large datasets.

1. Bubble Sort

Repeatedly swaps adjacent elements if they are in the wrong order.

  • Time Complexity: $O(n^2)$

2. Selection Sort

Repeatedly finds the minimum element and moves it to the beginning.

  • Time Complexity: $O(n^2)$

3. Insertion Sort

Builds the sorted array one item at a time, similar to sorting a deck of cards.

  • Time Complexity: $O(n^2)$
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Quiz

Question 1 of 1

Which of these sorting algorithms has the best average-case performance for small, nearly-sorted arrays?

Bubble Sort
Selection Sort
Insertion Sort
They are all identical