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Saturday 8 November 2014

C Program on Shell Sort

   #include <stdio.h>
   void shellsort(int A[],int max)
   {
     int stop,swap,limit,temp,k;
     int x=(int)(max/2)-1;
     while(x>0)
     {
       stop=0;
       limit=max-x;
       while(stop==0)
       {
         swap=0;
         for(k=0; kA[k+x])
         {
           temp=A[k];
           A[k]=A[k+x];
           A[k+x]=temp;
           swap=k;
         }
       }
       limit=swap-x;
       if(swap==0)
       stop=1;
     }
     x=(int)(x/2);
   }
   int main()
   {
     int i,ELEMENTS,X[100];
     printf("Enter the number of elements to be sorted:");
     scanf("%d",&ELEMENTS);
     printf("Enter the elements to be sorted:\n");
     for(i = 0; i < ELEMENTS; i++ )
     {
       scanf("%d",&X[i]);
     }
     printf("Unsorted Array:\n");
     for(i=0;i < ELEMENTS;i++)
       printf("%d ",X[i]);
     shellsort(X,ELEMENTS);
     printf("\n SORTED ARRAY\n");
     for(i=0;i < ELEMENTS;i++)
       printf("%d ",X[i]);
     printf("\n");
   }  

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