Sorting Algorithms — Free DSA Tutorial
Learn Sorting Algorithms in DSA with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn Sorting Algorithms in DSA with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
Sorting Algorithms in DSA
Sorting arranges data in order and unlocks binary search, deduplication and many greedy algorithms. Simple sorts — bubble, selection, insertion — are O(n²) and fine for small or nearly-sorted data. Efficient sorts — merge sort and quicksort — run in O(n log n).
Merge sort is a divide-and-conquer algorithm: split the array in half, sort each half recursively, then merge the two sorted halves. It is stable and always O(n log n), at the cost of O(n) extra space. Quicksort picks a pivot and partitions around it — O(n log n) on average, O(n²) worst case, but in place.
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