mrgsort(new).cpp

数据结构课程程序

/******Don't forget to download*****
*****GRAPHICAL DATA FILE STRUCTURE*****
*****A approach to learn DFS Graphically*****
Only @  http://www.vivekpatel.cjb.net        */

//Merge Sort

#include <iostream.h>
#include <conio.h>

int mrg_sort(int arr1[],int n1,int arr2[],int n2,int result[]){
     int i,j,k;
     i=j=k=0;
     while(i< n1 && j<n2){
	 if(arr1[i] < arr2[j])
	     result[k++] = arr1[i++];
	 else if(arr1[i] > arr2[j])
	     result[k++] = arr2[j++];
	 else{
	     result[k++]=arr1[i++];
	     j++;
	 }
     }
     if(i<n1){
	while(i<n1)
	   result[k++]=arr1[i++];
     }
     else if(j<n2){
	 while(j<n2)
	     result[k++]=arr2[j++];
     }
     return(k);
}

void main(){
	int arr1[10],arr2[10],result[20],i;
	clrscr();
	cout<<"Enter 10 numbers [arr1]: ";
	for(i=0;i<10;i++)
	  cin>>arr1[i];
	cout<<"\nEnter 10 numbers [arr2]: ";
	for(i=0;i<10;i++)
	  cin>>arr2[i];

	int item=mrg_sort(arr1,10,arr2,10,result);
	cout<<"\n\nAfter sort : ";
	for(i=0;i<item;i++)
	  cout<<result[i]<<" ";
	getch();
}