随笔

<span style="font-family:Courier New;font-size:18px;">#include <iostream>#include <cstdio>#include <algorithm>using namespace std;/*inline bool cmp(int a, int b){    return a > b;}*/int main(){    int a[5] = {7,3,5,9,1};    //sort(a, a+5, cmp);    sort(a, a+5);    for (int i = 0; i < 5; i++)        cout << a[i] << " ";    cout << endl;    return 0;}cmp函数 return a > b; -> 按照降序排列        return a < b; -> 按照升序排列</span>