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QuickSort.cpp
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81 lines (67 loc) · 1.16 KB
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#include<bits/stdc++.h>
using namespace std;
class Database{
int n;
float *array;
public:
Database();
Database(int);
void read();
void display();
void swap(float*,float*);
int partition(int,int);
void quickSort(int,int);
};
Database::Database(){
n=0;
array=NULL;
}
Database::Database(int n){
this->n=n;
array=new float[this->n];
}
void Database::read(){
cout<<"\nEnter Array Elements: ";
for(int i=0;i<n;i++)
cin>>array[i];
}
void Database::display(){
cout<<"\nArray: ";
for(int i=0;i<n;i++)
cout<<array[i]<<" ";
}
void Database::swap(float *a,float *b){
float temp=*a;
*a=*b;
*b=temp;
}
int Database::partition(int low,int high){
float pivot=array[high];
int i=low-1;
for(int j=low;j<high;j++){
if(array[j]<pivot){ // Ascending Order
i++;
swap(&array[i],&array[j]);
}
}
i++;
swap(&array[i],&array[high]);
return i;
}
void Database::quickSort(int low,int high){
if(low<high){
int ptr=partition(low,high);
quickSort(low,ptr-1);
quickSort(ptr+1,high);
}
}
int main(){
int n;
cout<<"\nEnter Array Size: ";
cin>>n;
Database container(n);
container.read();
container.quickSort(0,n-1);
container.display();
return 0;
}