题目描述
其中在输出最长上升子序列的时候,判断条件f[i] < f[j] + 1 很关键
C++ 代码
#include <iostream>
using namespace std;
const int N = 1010;
int f[N] , a[N];
int n;
int main(){
cin >> n;
for(int i = 1;i <= n;++i)
cin >> a[i];
for(int i = 1;i <= n;++i){
f[i] = 1;
for(int j = 1;j < i;++j){
if(a[i] > a[j]){
f[i] = max(f[j] + 1,f[i]);
}
}
}
int res = 0;
for(int i = 1;i <= n;++i)
res = max(res , f[i]);
cout << res << endl;
return 0;
}