C++ STL stack 括号匹配源代码

2024-11-20 技术教程

// STL_stack.cpp : 定义控制台应用程序的入口点。// STL 栈stack#include "stdafx.h"#include <iostream>#include <stack>#include <map>#include <string>#include <time.h>using namespace std;multimap<char, char> match;multimap<char, char> trueMatch;typedef pair<multimap<char, char>::iterator, multimap<char, char>::iterator> pairItr;stack<char> st;void initMatch(){ /* \ ( [ { } ] ) ( 2 2 2 0 0 1 [ 2 2 2 0 1 0 { 2 2 2 1 0 0 } 0 0 1 0 0 0 ] 0 1 0 0 0 0 ) 1 0 0 0 0 0 */ match.insert(make_pair('(', ')')); match.insert(make_pair('(', '[')); match.insert(make_pair('(', '{')); match.insert(make_pair('(', '(')); match.insert(make_pair('[', ']')); match.insert(make_pair('[', '(')); match.insert(make_pair('[', '[')); match.insert(make_pair('[', '{')); match.insert(make_pair('{', '}')); match.insert(make_pair('{', '{')); match.insert(make_pair('{', '[')); match.insert(make_pair('{', '(')); match.insert(make_pair(')', '(')); match.insert(make_pair(']', '[')); match.insert(make_pair('}', '{')); /*---------------------------*/ trueMatch.insert(make_pair('(', ')')); trueMatch.insert(make_pair(')', '(')); trueMatch.insert(make_pair(']', '[')); trueMatch.insert(make_pair('[', ']')); trueMatch.insert(make_pair('{', '}')); trueMatch.insert(make_pair('}', '{'));}bool isMatch(char ch){ if (st.empty()){ st.push(ch); return true; } pairItr pair = match.equal_range(st.top()); bool isExit = true; for (auto itr = pair.first; itr != pair.second;itr++) { if ((*itr).second == ch){ isExit = false; break; } } if (isExit){ return false; } if(trueMatch.find(st.top()) != trueMatch.end() && (*trueMatch.find(st.top())).second == ch){ st.pop(); return true; } st.push(ch); return true;}int _tmain(int argc, _TCHAR* argv[]){ clock_t begin_clock_t = clock(); initMatch(); //最糟糕情况匹配情况最后一位不匹配 //string str = "([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])["; string str = "([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])([{}])"; for (auto var = str.begin(); var != str.end();var++) { if(!isMatch(*var))break; } if (st.empty()){ cout << "----------匹配-----------" << endl; } else{ cout << "不匹配" << endl; } clock_t end_clock_t = clock(); cout << double(end_clock_t - begin_clock_t) / CLOCKS_PER_SEC * 1000 << "ms" << endl; getchar(); return 0;}