This commit is contained in:
e2hang
2025-08-13 14:53:22 +08:00
parent 2af9bc8927
commit 6ca2ae6356
6 changed files with 33 additions and 0 deletions

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@@ -22,6 +22,7 @@ int main(){
cout << endl;
cout << a.count(3) << endl;
a.erase(6);
//û<><C3BB>.at()<29><>a[i]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E1B9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD>ӷ<EFBFBD><D3B7>ʵ<EFBFBD>i<EFBFBD><69><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>it++
for(auto it = a.begin(); it != a.end(); it++){
cout << *it << " ";
}

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@@ -16,6 +16,7 @@ int main(int argc, char* argv[]){
b.insert(make_pair(3,"333"));
b.emplace(make_pair(4,"444"));
cout << b.count(3) << endl;
//û<><C3BB>.at()<29><>a[i]<5D><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><E1B9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD>ӷ<EFBFBD><D3B7>ʵ<EFBFBD>i<EFBFBD><69><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>it++
for(auto it = b.begin(); it != b.end(); it++){
cout << it->first << ", " << it->second << " ";
}

31
STL/STL-map/multimap.cpp Normal file
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@@ -0,0 +1,31 @@
#include <iostream>
#include <map>
using namespace std;
bool cmp(int a, int b){
return a < b;
}
int main(){
auto cmpl = [](int a, int b){
return a > b;
};
multimap<int, string, bool(*)(int, int)> a(cmp);
multimap<int, string, decltype(cmpl)> b(cmpl);
a.insert({{1,"111"},{2,"222"},{1,"11"},{1,"1"},{2,"22"},{3,"333"}});//emplaceֻ<65><D6BB><EFBFBD><EFBFBD>make_pair<69><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD>ôд
//pair<const int, string><3E><>Key<65><79>const<73><74><EFBFBD>ε<EFBFBD>
for(pair<int, string> x : a){
cout << x.first << ", " << x.second << " ";
}
cout << endl;
cout << a.find(1)->second << " " << a.count(1) << endl;
a.erase(a.find(1));
cout << a.find(1)->second << " " << a.count(1) << endl;
return 0;
}
/*
1, 111 1, 11 1, 1 2, 222 2, 22 3, 333
111 3
11 2
*/

BIN
STL/STL-map/multimap.exe Normal file

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