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Lecture Notes


DataStructure-Merge Sort.

#include <stdio.h>
#include <conio.h>
void main( )
{
int a[5] = { 11, 2, 9, 13, 57 } ;
int b[5] = { 25, 17, 1, 90, 3 } ;
int c[10] ;
int i, j, k, temp ;
clrscr( ) ;
printf ( "Merge sort.\n" ) ;
printf ( "\nFirst array:\n" ) ;
for ( i = 0 ; i <= 4 ; i++ )
printf ( "%d\t", a[i] ) ;
printf ( "\n\nSecond array:\n" ) ;
for ( i = 0 ; i <= 4 ; i++ )
printf ( "%d\t", b[i] ) ;
for ( i = 0 ; i <= 3 ; i++ )
{
for ( j = i + 1 ; j <= 4 ; j++ )
{
if ( a[i] > a[j] )
{
temp = a[i] ;
a[i] = a[j] ;
a[j] = temp ;
}
if ( b[i] > b[j] )
{
temp = b[i] ;
b[i] = b[j] ;
b[j] = temp ;
}
}
}
for ( i = j = k = 0 ; i <= 9 ; )
{
if ( a[j] <= b[k] )
c[i++] = a[j++] ;
else
c[i++] = b[k++] ;
if ( j == 5 || k == 5 )
break ;
}
for ( ; j <= 4 ; )
c[i++] = a[j++] ;
for ( ; k <= 4 ; )
c[i++] = b[k++] ;
printf ( "\n\nArray after sorting:\n") ;
for ( i = 0 ; i <= 9 ; i++ )
printf ( "%d\t", c[i] ) ;
getch( ) ;
}

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