Pagini recente » Cod sursa (job #2064918) | Rating Alin Muresan (AlinMuresan) | Statistici Raita Cristina (Criss.) | Cod sursa (job #715948) | Cod sursa (job #2058141)
#include <bits/stdc++.h>
#if 0
#define pv(x) cout<<#x<<" = "<<x<<"; "
#define pn cout<<"\n"
#else
#define pv(x)
#define pn
#endif
using namespace std;
ifstream in("algsort.in");
ofstream out("algsort.out");
using ll = long long;
using ull = unsigned long long;
using ui = unsigned int;
#define pb push_back
#define mp make_pair
const int NMax = 5e5 + 5;
const ll inf = 1e18 + 5;
const int mod = 100003;
using zint = int;
int N;
int v[NMax];
void solve(int,int);
int part(int,int);
int main() {
in>>N;
for (int i=1;i <= N;++i) {
in>>v[i];
}
srand(time(0));
solve(1,N);
for (int i=1;i <= N;++i) {
out<<v[i]<<' ';
}
in.close();out.close();
return 0;
}
void solve(int st,int dr) {
if (st >= dr) {
return;
}
int idx = part(st,dr);
solve(st,idx);
solve(idx+1,dr);
}
int part(int st,int dr) {
swap(v[st],v[rand()%(dr-st+1) + st]);
int pivot = v[st];
int i = st-1,j = dr+1;
while (true) {
do {
++i;
}
while (v[i] < pivot);
do {
--j;
}
while (v[j] > pivot);
if (i > j) {
return j;
}
else {
swap(v[i],v[j]);
}
}
swap(v[++i],v[dr]);
return i;
}