Cod sursa(job #1105178)

Utilizator mirceadinoMircea Popoveniuc mirceadino Data 11 februarie 2014 16:02:07
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.81 kb
#include<cstdio>
using namespace std;
const int NMAX = 500005;
const int MASK = (1<<8)-1;
int N,A,B,C,V[NMAX],W[NMAX],i,j,k,shift,Buckets[MASK+5];
int main()
{
    freopen("algsort.in","r",stdin);
    freopen("algsort.out","w",stdout);
    scanf("%d",&N);
    for(i=1;i<=N;i++)
        scanf("%d",&V[i]);
    for(i=0,shift=0;i<4;i++,shift+=8)
    {
        for(j=1;j<=N;j++)
        {
            k=(V[j]>>shift)&MASK;
            Buckets[k]++;
        }
        for(j=1;j<=MASK;j++)
            Buckets[j]+=Buckets[j-1];
        for(j=N;j;j--)
        {
            k=(V[j]>>shift)&MASK;
            W[Buckets[k]]=V[j];
            Buckets[k]--;
        }
        for(j=1;j<=N;j++) V[j]=W[j];
        for(j=0;j<=MASK;j++) Buckets[j]=0;
    }
    for(i=1;i<=N;i++) printf("%d ",V[i]);
    return 0;
}