Senin, 22 September 2014

IMPLEMENTATION OF MERGE SORT

IMPLEMENTATION OF MERGE SORT



PROGRAM:



#include

#include

#include

int n;

void main()

{

int i,low,high;

int a[20];

void mergesort(int a[10],int low,int high);

void display(int a[10]);

clrscr();

printf("\n\tMerge Sort");

printf("\n Enter the size of elements");

scanf("%d",&n);

printf("\n Enter the list element");

for(i=0;i
scanf("%d",&a[i]);

low=0;

high=n-1;

mergesort(a,low,high);

display(a);

getch();

}

void mergesort(int a[10],int low,int high)

{

int mid;

void combine(int a[10],int low,int mid,int high);

if(low
{

mid=(low+high)/2;

mergesort(a,low,mid);

mergesort(a,mid+1,high);

combine(a,low,mid,high);

}

}

void combine(int a[10],int low,int mid,int high)

{

int i,j,k;

int temp[10];

k=low;

i=low;

j=mid+1;

while(i<=mid&&j<=high)

{

if(a[i]<=a[j])

{

temp[k]=a[i];

i++;

k++;

}

else

{

temp[k]=a[j];

j++;

k++;

}

}

while(i<=mid)

{

temp[k]=a[i];

i++;

k++;

}

while(j<=high)

{

temp[k]=a[j];

j++;

k++;

}

for(k=low;k<=high;k++)

a[k]=temp[k];

}

void display(int a[10])

{

int i;

printf("\n\n The Sorted Array is.......");

for(i=0;i
printf("%d\t",a[i]);

}



















OUTPUT:



Merge Sort

Enter the size of elements 5



Enter the list element

9

8

7

6

5





The Sorted Array is.......5 6 7 8 9









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