#include<algorithm>#include<iostream>usingnamespacestd;boolcom(inta,intb){returna>b;}intmain(){inta[10]={9,6,3,8,5,2,7,4,1,0};for(inti=0;i<10;i++)cout<<a[i]<<endl;sort(a,a+10,com);//在这里就不需要对com函数传入参数for(inti=0;i<10;i++)cout<<a[i]<<endl;return0;...
#include<iostream>#include<algorithm>#include<vector>intmain(){std::vector<int>numbers{5,2,8,1...
用sort函数对char型的数组进行排序:【降序】添加一个compare函数 1#include<iostream>2#include <algorithm>3usingnamespacestd;45boolcompare(chara,charb)6{7returna>b;8}910intmain()11{12chardata[100];13intn;14inti;15chartemp;16while(~scanf("%d",&n))17{18getchar();19for(i=0;i<n*2;i++...
#include <algorithm>using namespace std;typedef struct example{ int elem1; int elem2;}example;/*这个comparison函数很重要.如果希望升序排序,就是"<",降序排列就是">"号,这样便于直观记忆.如果希望用elem2作为比较标准就把elem1改为elem2,这样结构体就以elem2为比较标准排序了.*/ ...
PAT月底算法题中,引用了库文件#include <algorithm>后调用sort函数依旧报错‘sort’ was not declared in this scope 解决方法是在引用库函数后就要加上using namespace std;问题就解决了。
algorithmalgorithm头文件里面包含了很多十分实用的函数,至少于我而言,这是我用的最多的stlstl。由于所有对区间进行操作的函数都遵循左闭右开的原则,所以假设操作区间为[l,r],那么写在函数里的应该是[l,r+1]。 reverse 翻转一个vectorvector:reverse(vector.begin(),vector.end())reverse(vector.begin(),vector...
#include <cstdio> #include <cstring> #include <algorithm> using namespace std; char s[103]; int cnt, a[5], num[7], res[1003], tot; bool vis[11]; void dfs(int cur) { res[tot++] = cur; cur *= 10; for(int i = 0; i < cnt; ++i) { if(!vis[num[i]]) { vis[num...
#include <iostream> #include <string> #include <algorithm> using namespace std; bool used[6]; void backtrack(string &s, bool * used, string &now) { if (now.size() == s.size()) cout << now << endl; for (int i = 0; i < int(s.size()); i++) { if (used[i] == fa...
3 #include <algorithm> 4 #include <iterator> 5 #include <numeric> 6 #include "Sales_item.h" 7 int main(){ 8 std::istream_iterator<Sales_item> in_iter(std::cin), in_eof; 9 std::vector<Sales_item> vec; 10 while (in_iter != in_eof) ...
// Also sort and simplify character classes. #include <stddef.h> #include <algorithm> #include <string> #include "absl/log/absl_check.h" #include "absl/log/absl_log.h" #include "util/utf.h" #include "absl/strings/string_view.h" #include "re2/pod_array.h" #include "re2/regexp....