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 is there anyone who can sort this using quick sort
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Posted on 10-14-10 12:48 PM     Reply [Subscribe]
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3,1,4,1,5,9,2,6,5,3,5
 
Posted on 10-14-10 1:25 PM     [Snapshot: 20]     Reply [Subscribe]
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Are you talking about excel or other specific program?

 
Posted on 10-14-10 1:31 PM     [Snapshot: 26]     Reply [Subscribe]
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not in excel bud. I actually need on quick sort diagram.
 
Posted on 10-14-10 3:26 PM     [Snapshot: 74]     Reply [Subscribe]
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Sorry double post.
Last edited: 14-Oct-10 03:26 PM

 
Posted on 10-14-10 3:26 PM     [Snapshot: 74]     Reply [Subscribe]
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Grabbing the pseudocode from wikipedia: 

function
quicksort(array)
     
var list less, greater
     
if length(array) 1  
         
return array  
     
select and remove a pivot value pivot from array
     
for each x in array
         
if x pivot then append x to less
         
else append x to greater
     
return concatenate(quicksort(less), pivot, quicksort(greater))

iteration 1
Choose any pivot, for instance, 3 looks good then
(1,1,2,3)  3 (4,5,9,6,5,5)

iteration 2
Chosing 2 as pivot, and 5 as pivot
(1,1) (2) (3) 3 (4,5,5) 5 (6,9)

Third iteration, chosing random pivot as usual
(1) (1) 2 (3) 3 (4,5) 5 5 (6)(9)

Last iteration:
1 1 2 3 3 4 5 5 5 6 9

I hope I am right and I hope it helps. :)




 
Posted on 10-14-10 3:45 PM     [Snapshot: 110]     Reply [Subscribe]
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From http://en.wikipedia.org/wiki/Quicksort


You can replace ur numbers to following diagram

 
Posted on 10-15-10 3:00 AM     [Snapshot: 244]     Reply [Subscribe]
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This should give you the concept. Yellow bg indicates May Not Require This Step/Possibly wrong. Red int indicates the selection of the partition point ( starting at right -- pivot). underlined is the position where it is sorted.  { } =selection of block . When block has one element, it is sorted already. Bold int= upcoming pivot

 


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