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Jan 18th, 2019
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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int partitionn(int arr[100],int p,int q);
  4. void quicksort(int arr[100],int p,int q);
  5. int main()
  6. {
  7. int p,q,n,i,arr[100];
  8. cin>>n;
  9. for(i=0;i<n;i++)
  10. {
  11. cin>>arr[i];
  12. }
  13. quicksort(arr,0,n-1);
  14. for(i=0;i<n;i++)
  15. {
  16. cout<<arr[i]<<endl;
  17. }
  18. }
  19. void quicksort(int arr[],int p,int q)
  20. {
  21. int i,n;
  22. if(p<q)
  23. {
  24. int k=partitionn(arr,p,q);
  25. quicksort(arr,p,k-1);
  26. quicksort(arr,k+1,q);
  27. }
  28.  
  29. }
  30. int partitionn(int arr[],int p,int q)
  31. {
  32. int i=0,j,n,pivot=0;
  33. i=p;
  34. pivot=arr[p];
  35.  
  36. for(j=p+1;j<=q;j++)
  37. {
  38. if(arr[j]<=pivot)
  39. {
  40.  
  41.  
  42. swap(arr[i],arr[j]);
  43. i++;
  44.  
  45.  
  46. }
  47. }
  48. swap(arr[i],pivot);
  49. return i;
  50.  
  51. }
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