Cod sursa(job #2868714)

Utilizator loghin_antoniaLoghin Antonia loghin_antonia Data 11 martie 2022 09:38:09
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.75 kb
#include <bits/stdc++.h>
using namespace std;
int n,a[500005];
void IC(int st, int dr)
{
    int m=(st+dr)/2;
    int b[n+1],k=0;
    int i=st,j=m+1;
    while(i<=m&&j<=dr)
        if(a[i]<a[j]) b[++k]=a[i++];
        else b[++k]=a[j++];
    while(i<=m) b[++k]=a[i++];
    while(j<=dr) b[++k]=a[j++];
    for(int i=st;i<=dr;i++)
        a[i]=b[i-st+1];
}
void MS(int st, int dr)
{
    if(dr-st<=1)
    {
        if(a[st]>a[dr]) swap(a[st],a[dr]);
        return;
    }
    int m=(st+dr)/2;
    MS(st,m);
    MS(m+1,dr);
    IC(st,dr);
}
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int main()
{
    fin>>n;
    for(int i=1;i<=n;i++) fin>>a[i];
    MS(1,n);
    for(int i=1;i<=n;i++) fout<<a[i]<<" ";
    return 0;
}