85 lines
1.6 KiB
C++
85 lines
1.6 KiB
C++
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#include<bits/stdc++.h>
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using namespace std;
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/*
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<EFBFBD><EFBFBD><EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡmap
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<EFBFBD><EFBFBD><EFBFBD>ߣ<EFBFBD><EFBFBD>ƺ<EFBFBD>
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ʱ<EFBFBD>䣺2019-10-29
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*/
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void printMap(map<int, int> _map) {
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map<int, int>::iterator iter = _map.begin();
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for (; iter != _map.end(); iter++) {
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cout << iter->first << ' ' << iter->second << endl;
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}
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cout << endl;
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}
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/*
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<EFBFBD><EFBFBD><EFBFBD>ܣ<EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><EFBFBD>Ǵ<EFBFBD><EFBFBD><EFBFBD>map<EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD>ߣ<EFBFBD><EFBFBD>ƺ<EFBFBD>
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ʱ<EFBFBD>䣺2019-10-29
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*/
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bool isExist(map<int, int> _map, int a) {
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map<int, int>::iterator iter = _map.find(a);
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if (iter != _map.end()) {
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return 1;
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}
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else {
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return 0;
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}
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}
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/*
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<EFBFBD><EFBFBD><EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD>map<EFBFBD><EFBFBD>ɾ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD>ߣ<EFBFBD><EFBFBD>ƺ<EFBFBD>
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ʱ<EFBFBD>䣺2019-10-29
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*/
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void deleteMapByKey(map<int, int>& _map, int a) { //ע<><D7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>&<26><>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5> ,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>ʵ<EFBFBD>ε<EFBFBD>ֵ
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//<2F><><EFBFBD>ݼ<EFBFBD>ֵɾ<D6B5><C9BE>
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_map.erase(a);
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}
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/*
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<EFBFBD><EFBFBD><EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD>map<EFBFBD>е<EFBFBD>һ<EFBFBD><EFBFBD>Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD>ߣ<EFBFBD><EFBFBD>ƺ<EFBFBD>
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ʱ<EFBFBD>䣺2019-10-29
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*/
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void updateForMap(map<int, int>& _map, int key, int value) { //ע<><D7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>&<26><>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5> ,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>ʵ<EFBFBD>ε<EFBFBD>ֵ
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map<int, int>::iterator iter = _map.find(key);
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if (iter != _map.end()) {
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iter->second = value;
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return;
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}
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}
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int main() {
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//<2F>ֵ<EFBFBD>map
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map<int, int> _map;
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//<2F><><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA>
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for (int i = 1; i <= 10; i++) {
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pair<int, int> value(i, i);
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_map.insert(value);
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}
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//<2F><>ӡ<EFBFBD>Dz<EFBFBD><C7B2>Ǵ<EFBFBD><C7B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3
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cout << "<EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3<EFBFBD><EFBFBD>" << isExist(_map, 3) << endl;
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//<2F><><EFBFBD><EFBFBD>ɾ<EFBFBD><C9BE>Ԫ<EFBFBD><D4AA>3
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deleteMapByKey(_map, 3);
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//<2F>ٴδ<D9B4>ӡ<EFBFBD>Dz<EFBFBD><C7B2>Ǵ<EFBFBD><C7B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3
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cout << "<EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3<EFBFBD><EFBFBD>" << isExist(_map, 3) << endl;
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//<2F><><EFBFBD><EFBFBD>map
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cout << "Ԫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD>map" << endl;
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printMap(_map);
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//<2F><EFBFBD><DEB8><EFBFBD><EFBFBD><EFBFBD>
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updateForMap(_map, 6, 10);
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//<2F><><EFBFBD><EFBFBD>map
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cout << "Ԫ<EFBFBD><EFBFBD><EFBFBD>ĺ<EFBFBD><EFBFBD><EFBFBD>map" << endl;
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printMap(_map);
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return 0;
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}
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