Quicksort help if the pivot chosen is least i.e 1

Question

1.00/5 (1 vote)

See more:

Hi All, I am trying to use quicksort and I have a question say i got an array 5 8 1 2 6 and I chose 1 as pivot then there are no elements less than Pivot to swap .. so how will my iteration turn into .. !

What I have tried:

understanding quicksort, i understand that lowest number shouldn't be chosen as Pivot as it will take n2 but if i am tryng to understand what happens if the pivot is actually 1.

Posted 28-Nov-18 10:17am

AlwzLearning

Updated 29-Nov-18 8:25am

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard MacCutchan · Answer 1 · 2018-11-28T22:05:00

Solution 1

Run the code through your debugger and you will see exactly what happens.

Posted 28-Nov-18 22:05pm

Richard MacCutchan

Patrice T · Answer 2 · 2018-11-29T08:26:00

Solution 2

Quote:
Quicksort help if the pivot chosen is least i.e 1

Even if pivot is lowest value, everything works the same.
A poor choice of pivot is just unfortunate and will be simply less efficient than a pivot than is in middle of values, its the only difference.
Quicksort - Wikipedia[^]

Posted 29-Nov-18 8:26am

Patrice T