代码就是过不了，每次都是WA
by You_Yang @ 2023-05-20 19:09:26
for (int j = 0;j < N-i-1;j++)
by 2044_space_elevator @ 2023-05-20 19:31:14
@[Ruiyouyang](/user/766810)
改成这样
```cpp
#include <bits/stdc++.h>
using namespace std;
int main(){
int N,a = 0;
cin>>N;
int n[N];
for (int i = 0;i < N;i++)
cin>>n[i];
for (int i = 0;i < N;i++)
for (int j = 0;j < N-i-1;j++)
if (n[j] > n[j+1]){
swap(n[j],n[j+1]);
a++;
}
cout<<a;
return 0;
}
```
by 2044_space_elevator @ 2023-05-20 19:31:49
我 * 你 * * 你个 * * 这都不会
```
#include<iostream>
using namespace std;
int main() {
int n, ans = 0;
cin >> n;
int* a = new int[N];
for (int i = 0; i < n; i++)
cin >> a[i];
for (int i = 0; i < n-1; i++) {
for (int j = 0; j < n-i-1; j++) {
if (a[j] > a[j+1]) {
int tmp = a[j];
a[j] = a[j+1];
a[j+1] = tmp;
ans++;
}
}
}
cout << ans << endl;
return 0;
}
```
by 303YYDS @ 2023-05-20 20:00:41
```
#include <iostream>
using namespace std;
int n, sum;
int main()
{
cin >> n;
int a[n];
for (int i = 0; i < n; ++i)
cin >> a[i];
for (int i = 0; i < n; ++i)
for (int j = 0; j < i; ++j)
if (a[j] > a[i])
++sum;
cout << sum;
return 0;
}
by zhanlinchuan @ 2023-05-20 20:22:20
@[2044_space_elevator](/user/824363) 可以麻烦大佬讲一下为什么要在N-i后再-1吗？
by You_Yang @ 2023-05-24 09:58:19
@[RuiYouyang](/user/766810)
因为你索引是从0开始的。
by 2044_space_elevator @ 2023-05-24 11:23:57