Pagini recente » Cod sursa (job #1931349) | Cod sursa (job #2447059) | Cod sursa (job #1593326) | Cod sursa (job #2261186) | Cod sursa (job #2897679)
#include <bits/stdc++.h>
using namespace std;
void merge_arr(int v[], int p, int q, int r) {
int n1 = q - p + 1;
int n2 = r - q;
int L[n1], M[n2];
for(int i = 0; i < n1; i++)
L[i] = v[p + i];
for(int i = 0; i < n2; i++)
M[i] = v[q + 1 + i];
int i = 0, j = 0, k = p;
while(i < n1 && j < n2) {
if(L[i] <= M[j]) {
v[k] = L[i];
i++;
} else {
v[k] = M[j];
j++;
}
k++;
}
while (i < n1) {
v[k] = L[i];
i++;
k++;
}
while (j < n2) {
v[k] = M[j];
j++;
k++;
}
}
void merge_sort(int v[], int st, int dr) {
if(st >= dr)
return;
int mid = st + (dr - st) / 2;
merge_sort(v, st, mid);
merge_sort(v, mid + 1, dr);
return merge_arr(v, st, mid, dr);
}
void quick_sort(int v[], int st, int dr) {
if (st >= dr)
return;
int piv = rand() % (dr - st + 1) + st;
int aux = v[st];
v[st] = v[piv];
v[piv] = aux;
int i = st, j = dr, d = 0;
while(i < j) {
if(v[i] > v[j]) {
int aux = v[i];
v[i] = v[j];
v[j] = aux;
d = 1 - d;
}
i += d;
j -= 1 - d;
}
quick_sort(v, st, i - 1);
quick_sort(v, i + 1, dr);
}
int main()
{
srand (time(NULL));
int n, v[500001];
ifstream f("algsort.in");
ofstream g("algsort.out");
f>>n;
for(int i = 0; i < n; i++)
f>>v[i];
quick_sort(v, 0, n - 1);
for(int i = 0; i < n; i++)
g<<v[i]<<" ";
return 0;
}