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Re: quicksort 10 Years Ago by rubberman Quicksort is implemented in C with the qsort() function. It is fast, efficient. You aren't sorting in your code. RTFM... For C++/Java code, look here: http://www.algolist.net/Algorithms/Sorting/Quicksort FWIW, you should be able to do this in about 10-20 lines of code. A bit more if you implement all the low-level stuff yourself. Re: quicksort 10 Years Ago by deceptikon > Quicksort is implemented in C with the qsort() function. The interesting …'t in any way require that `qsort` be implemented as quicksort, nor does it impose any performance requirements in the same… Re: Quicksort with 1 parameter? 14 Years Ago by Momerath QuickSort is recursive and thus requires the 3 parameters to use. What you need to do is create a wrapper around the call: [code]private void DoQuickSort(int[] a) { QuickSort(a, 0, a.Length - 1);[/code] quicksort 17 Years Ago by jarhead741 …int parttition(int myArray[],int first, int last); void quicksort(int myArray[],int first, int last); //last=size… int first,last; first=0; last=size-1; quicksort( myArray, first, last); for (x=0;x<…pivot; pivot=temp1; myArray[i-1]=myArray[last]; } void quicksort(int myArray[],int first, int last) { int pivot=0;… quicksort 17 Years Ago by i_suck_inc++ …NUM_ITEMS; int main() { void enterdata(); void quicksort(int,int); int i; cout<<&…;"\nEnter the numbers:"; enterdata(); quicksort(0,NUM_ITEMS-1); cout<<"…lower) { pivot=split(lower, upper); quicksort(lower,pivot-1); quicksort(pivot+1,upper); } } int split(… quicksort 14 Years Ago by gfx … I have a problem with implementation of a quicksort algorithm. I have pseudo-code which helping me …= A[down]; A[down] = temp; return j; } } void quicksort (int A[], int down, int top) { if (down < top…) { int j = partition (A, down, top); quicksort (A, down, j-1); quicksort (A, j+1, top); } } int main() { … QuickSort help 13 Years Ago by kukuruku … optimized quick sort little help please [CODE] public static void quickSort(int []A,int p,int q){ while(p<=q…) { int r = partition(A, p,q); quickSort(A, p, r); quickSort(A, r+1, q); } } static int partition(int… quicksort 10 Years Ago by Hector_2 … std; void printList(arrayListType<int>& list); void quickSort(arrayListType<int>& list); // int main() {…arrayListType<int>& list) { list.print(); } // void quickSort(arrayListType<int>& list) { list.print(); cout <… Re: quicksort 10 Years Ago by ddanbe Do you think more than 400 lines of code are going to impress anyone here? Ifyou want code for quicksort, just google. Re: QuickSort 21 Years Ago by Dani … a homework assignment meant to demonstrate my knowledge of the QuickSort. It was basically a "sort coordinates via a… quicksort, exercise for a weekend" given Friday due Monday type … QuickSort 21 Years Ago by Dani The attached program performs a QuickSort in C++ which sorts an array of structs based on their data members. Basically, it sorts an array of coordinates based on their distance from the origin. cant get my quicksort program to compile help 14 Years Ago by rockerjhr …p_right += elementsize ; } leftsize = (p_right - data) / elementsize ; quicksort(data,leftsize,elementsize,compare) ; quicksort(p_right,n-leftsize,elementsize,p_cmp_f) ; } [/CODE] main.c…0x3e): first defined here quicksort.o: In function `quicksort': quicksort.c:(.text+0x46): multiple definition of `quicksort' /tmp/ccwpEZSE.o:… Re: Quicksort in Scheme? 16 Years Ago by shrughes … (split pivot (cdr L) () ()))) (list (quicksort (car x)) pivot (quicksort (cdr x)))) [/code] That way, you're…cdr xs) lessers (cons (car xs) greaters))))) (define (bad-quicksort xs) (if (null? xs) '() (let* ((pivot (… [/code] We can also write a destructive quicksort implementation simply by using the destructive version of… Re: Quicksort strings? 16 Years Ago by tpluscomb …\documents\visual studio 2008\projects\project 4\project 4\quicksort.h(43) : error C2784: 'reverse_iterator<_RanIt…\documents\visual studio 2008\projects\project 4\project 4\quicksort.h(43) : error C2784: 'reverse_iterator<_RanIt…documents\visual studio 2008\projects\project 4\project 4\quicksort.h(43) : error C2784: 'reverse_iterator<_RanIt… QuickSort Oddness 14 Years Ago by MisterBook …;< " Low < End " << endl; 53 QuickSort(&DataRestructure, Low, End); 54 } 55 56 RawData->swap…lt; " Low < End " << endl; 114 QuickSort(&DataRestructure, Low, End); 115 } 116 117 RawData->swap… Quicksort random array 13 Years Ago by xThrash …; array.length; i++) System.out.print( array[i]+" "); quicksort(array,0, array.length); System.out.print("\n\nOutput…="Red"][B]java.lang.ArrayIndexOutOfBoundsException: 100 at quickSort.quicksort(quickSort.java:32) at quickSort.main(quickSort.java:16)[/B][/COLOR] Thanks in advance Quicksort on linked list ? 15 Years Ago by Aprentchacker … please !! heres my code: [CODE] //Sorting using quicksort sorting algorithm void linkedListType::quicksort(nodeType* &start, nodeType* &end) { …info = start->info; start->info = temp; quicksort(start, trailSmall); quicksort(smallIndex->link, trailCurrent); return; } int main(){ … Quicksort, segmentation fault. 13 Years Ago by fox196 …I'm getting segmentation fault errors when I use quicksort with ~350 000+ numbers. This is the…} } i++; swap(v, i, e); return i; } void quicksort(int* v, int s, int e) { if (s <…= 350 * 1000; int *vec = 0; generate_vector(vec, n); quicksort(vec, n); int i = 0; while (i < n)… Re: Quicksort on linked list ? 15 Years Ago by Aprentchacker …copy copyList(otherList); return *this; } //Sorting using quicksort sorting algorithm void linkedListType::quicksort(nodeType* &start, nodeType* &end) {… = start->info; start->info = temp; quicksort(start, trailSmall); quicksort(smallIndex->link, trailCurrent); return; } int main(){… QuickSort issues 13 Years Ago by t_daniweb …using namespace std; class AbstractSort { public: void QuickSort(int arr[], int s, int e); int getComparisonCount… temp; } class MaxSort : public AbstractSort { public: void QuickSort(int arr[], int s, int e); }; //MaxSort::sort … // recursively sort the lesser list QuickSort(list,m,j-1); QuickSort(list,j+1,n); } } … Quicksort sorts all but 1 number 17 Years Ago by JaksLax … * @param last The last element to consider in theArray */ void quicksort(int theArray[], int first, int last){ int pivotIndex; if(first…: S1, pivot, S2 partition(theArray, first, last, pivotIndex); quicksort(theArray, first, pivotIndex-1); quicksort(theArray, pivotIndex+1, last); } } /** * The main method */ int… QuickSort..need help? 15 Years Ago by sleepybug …]=a[lower]; a[lower]=i; return lower; } void QuickSort(int a[],int left,int right) { int pivot=Divide(a…,left,right); if(left < right) { QuickSort(a,left,pivot-1); QuickSort(a,pivot+1,right); } } void main () {…quot;\nThe Sorted Elements In Ascending Order According To QuickSort Are As Follows:"; for (i=1;i… Re: QuickSort Oddness 14 Years Ago by chococrack So eh... when you're calling your deal here [CODE] QuickSort(&test);[/CODE] with your 20 element (size) and then … Quicksort using median of 3 or 5 10 Years Ago by Zachary_1 … infinite loop hell. Here is my quicksort import java.util.*; public class QuickSort { static Random gen = new Random… = pivotIndex - first; n2 = n - n1 - 1; QuickSort(unsortedArray, first, n1, isMedOf3); QuickSort(unsortedArray, pivotIndex + 1, n2, isMedOf3); } } private static… Quicksort algorithm 6 Years Ago by IntelegoIt …[high] = temp; return i+1; } /* The main function that implements QuickSort() arr[] --> Array to be sorted, low --> Starting index…, 7, 8, 9, 1, 5}; int n = arr.length; QuickSort ob = new QuickSort(); ob.sort(arr, 0, n-1); System.out.println… Re: Quicksort random array 13 Years Ago by stultuske basicly, the sollution for your problem can be found in my previous post: you're telling your quicksort method: j = array.length => this means: j = 100 and the, you go and ask for the value of array[100] ==> while (array[j]>x) j--; so, you're asking for the 101'th element, and that's where your exception occurs. Quicksort... Need one line... 17 Years Ago by varsitygirl_13 …. THANKS! [code=cplusplus] int * partition(int array[], int size); void quicksort(int array[], int size) { if (size == 0) return ; else { …int * split = partition(array, size); quicksort(array, split - array); quicksort( ); return ; } } [/code] I already have partition prototyped, im just… Quicksort strings? 16 Years Ago by tpluscomb … words from a file and quicksort them. I tried using my quicksort on an array of strings …namespace std; int pickPivot = 0; int comparisons = 0; //quicksort template< typename Type > void quickSort1( Type* array,… I tried unsuccessfully in main: [code] #include "Quicksort.h" #include <string> #include <… Re: Quicksort, segmentation fault. 13 Years Ago by raptr_dflo … can you allocate (if you comment-out the call to quicksort())? + how far into the recursion can you get? At the… beginning of the 3-parameter quicksort() function, add a debug line like: [CODE] cout <<… Quicksort problem 12 Years Ago by MachDelta …. Here's the mess: //Quick Sort vector<int> quickSort(vector<int> &data, int left, int right…{ int split = partition(data, left, right); recurses+=2; quickSort(data, left, split-1); quickSort(data, split+1, right); } } //Quick sort partitioning int…