1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
| #include<iostream>
using namespace std;
const int N = 100010;
int q[N], tmp[N];
int n;
void merge_sort(int q[], int l, int r)
{
if (l >= r)
return;
int mid = l + r >> 1;
merge_sort(q, l, mid);
merge_sort(q, mid + 1, r);
int i = l, j = mid + 1;
int k = 0;
while (i <= mid && j <= r)
{
if (q[i] <= q[j])
tmp[k++] = q[i++];
else
tmp[k++] = q[j++];
}
while (i <= mid)
tmp[k++] = q[i++];
while (j <= r)
tmp[k++] = q[j++];
for (int i = l, j = 0; i <= r; i++, j++)
q[i] = tmp[j];
}
int main()
{
cin >> n;
for (int i = 0; i < n; i++)
scanf("%d", &q[i]);
merge_sort(q, 0, n - 1);
for (int i = 0; i < n; i++)
printf("%d ", q[i]);
return 0;
}
|
