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44 lines
989 B
44 lines
989 B
#include <bits/stdc++.h>
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using namespace std;
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/*
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中缀的逻辑表达式 转 后缀的逻辑表达式
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测试用例：
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0&(0|1|0)
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答案：
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001|0|&
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*/
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unordered_map<char, int> h{{'|', 1}, {'&', 2}};
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string s;
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string t;
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stack<char> stk;
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int main() {
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cin >> s;
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for (int i = 0; i < s.size(); i++) {
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if (isdigit(s[i]) || isalpha(s[i]))
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t.push_back(s[i]);
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else if (s[i] == '(')
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stk.push(s[i]);
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else if (s[i] == ')') {
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while (stk.top() != '(') {
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t.push_back(stk.top());
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stk.pop();
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}
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stk.pop();
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} else {
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while (stk.size() && h[s[i]] <= h[stk.top()]) {
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t.push_back(stk.top());
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stk.pop();
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}
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stk.push(s[i]);
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}
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}
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while (stk.size()) {
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t.push_back(stk.top());
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stk.pop();
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}
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printf("%s", t.c_str());
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return 0;
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} |