游程编码 的加密与解密

作者:   电子科技大学   Aries
来源:   http://blog.chinaunix.net/space.php?uid=27778449

#include
#define M 10
 
int in_password(int *a,int N)
{
        int i,j,n,m,k;
        n=N;
        m=k=0;   
        for(i=0;i        {    
                for(j=i+1;j                {    
                        if(a[i]==a[j])
                        {    
                                n--;
                                i++;
                        }    
                        else
                                break;
                }    
        }    
     
        n=2*n;
       int b[n];
 
        for(i=0;i        {
                for(j=i+1;j                {
                        if(a[i]==a[j])
                        {
                                m++;
                                i++;
                        }
                        else
                                break;
                }
                b[k++]=a[i];
                b[k++]=m+1;
                m=0;
        }
 
        for(k=0;k        {
                printf("%d ",b[k]);
        }
     printf("\n");
}
 
int out_password(int *a,int N)
{
        int i,j,m=0,n=0;
        for(i=1;i        {
                n+=a[i];
        }
 
        int b[n];
        for(i=0;i        {
                while(a[i+1]--)
                {
                        b[m++]=a[i];
                }
        }
        for(i=0;i        {
                printf("%d ",b[i]);
     }
        
     printf("\n");
}
 
int main()
{
        int a[M],i;
        printf("please input %d numbers:",M);
        for(i=0;i        {
                scanf("%d",&a[i]);
        }
        in_password(a,M);
        out_password(a,M);