Cod sursa(job #2743800)

Utilizator Liviu_Ionut_MoantaMoanta Ionut Liviu Liviu_Ionut_Moanta Data 23 aprilie 2021 15:40:42
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.9 kb
#include<fstream>
#include<algorithm>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int v[500005],w[500005];
int n,m,i,j,k,maxim,s,sum,p,u;
void inter(int i,int mid,int j){
    int t=i;
    int u=mid+1;
    int k=i-1;
    while(t<=mid&&u<=j){
        if(v[t]>v[u]){
            w[++k]=v[u];
            u++;
        }
        else{
            w[++k]=v[t];
            t++;
        }
    }
    for(;t<=mid;t++)
        w[++k]=v[t];
    for(;u<=j;u++)
        w[++k]=v[u];


}
void mergesort(int i,int j){
    if(i==j)
        return;
    int mid=(i+j)/2;
    mergesort(i,mid);
    mergesort(mid+1,j);
    inter(i,mid,j);
    for(int u=i;i<=j;i++)
        v[i]=w[i];
}
int main(){
    fin>>n;
    for(i=1;i<=n;i++){
        fin>>v[i];
        w[i]=v[i];
    }
    mergesort(1,n);
    for(i=1;i<=n;i++)
        fout<<w[i]<<" ";
    return 0;
}