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For College Students

Quick Sort Algorithm in Data Structure

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In the next video, you will learn about a new sorting algorithm called the Quicksort. This one again will use Divide and Conquer logic. Let’s see how it works.

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Video Transcript

 

QuickSort is another algorithm which performs very fast, especially in average cases. Again, just like Mudsort, it uses divide and conquer, but in a different way. It is one algorithm which is very frequently used in the industry. Let's see how it works.

 

Video Recap

 

  • QuickSort is a popular algorithm used in industry.

  • It uses a divide and conquer approach to sort data.

  • It is efficient in average cases.

  • QuickSort uses a pivot element to partition the data into smaller and larger groups.

  • The smaller and larger groups are then recursively sorted using the Quick Sort algorithm.

 

Now, Aishwarya will take you through a simple logical example to show you how Quick Sort works. She will take a sample array and then run it through the QuickSort algorithm to show you how QuickSort works. Let’s now see how Quick Sort works.

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Now that you have seen how we created the left subarray from the original array which consisted of all elements smaller than the pivot, it is time to repeat a similar procedure on the remaining array and see how it gives us a right subarray which consist of all elements larger than the pivot.

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Great! Now you've seen how Aishwarya demonstrated the working of a Quicksort. We are ready now to write a simple pseudocode for the same algorithm. Let us see that in the coming section.