Quick Sort Implementation - Data Structures Source Code in C++

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Home » C++ Home » Data Structures Home » Quick Sort Implementation

A D V E R T I S E M E N T

Title	Quick Sort Implementation
Author	Vivek Tiwari
Author Email	vivek_tiwari1982 [at] yahoo.com
Description	The following is the code in which i have implemented Quick sort(fastest sortin algorithm)Time Complexity-n*(logn).. go thrgh the code and it is free for use.any comments abt the code are welcome
Category	C++ » Data Structures
Hits	384615
Code	Select and Copy the Code
/Quick Sort Algorithm developed by Vivek Tiwari 27-6-2004/ #include<process.h> #include<iostream.h> #include<conio.h> #include<stdlib.h> int Partition(int low,int high,int arr[]); void Quick_sort(int low,int high,int arr[]); void main() { int a,n,low,high,i; clrscr(); cout<<"/***********************Quick Sort Algorithm Implementation**************/ "; cout<<"Enter number of elements: "; cin>>n; a=new int[n]; / cout<<"enter the elements: "; for(i=0;i<n;i++) cin>>a;/ for(i=0;i<n;i++) a[i]=rand()%100; clrscr(); cout<<" Initial Order of elements "; for(i=0;i<n;i++) cout<<a[i]<<" "; cout<<" "; high=n-1; low=0; Quick_sort(low,high,a); cout<<" Final Array After Sorting: "; for(i=0;i<n;i++) cout<<a[i]<<" "; getch(); } /Function for partitioning the array/ int Partition(int low,int high,int arr[]) { int i,high_vac,low_vac,pivot/,itr*/; pivot=arr[low]; while(high>low) { high_vac=arr[high]; while(pivot<high_vac) { if(high<=low) break; high--; high_vac=arr[high]; } arr[low]=high_vac; low_vac=arr[low]; while(pivot>low_vac) { if(high<=low) break; low++; low_vac=arr[low]; } arr[high]=low_vac; } arr[low]=pivot; return low; } void Quick_sort(int low,int high,int arr[]) { int Piv_index,i; if(low<high) { Piv_index=Partition(low,high,arr); Quick_sort(low,Piv_index-1,arr); Quick_sort(Piv_index+1,high,arr); } }

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