'commit'

TangDou/CSP-J/J2_2020/ZhuanTi_BiaoDaShi/ToPostFix/InFixToPostFix_LuoJi.cpp

@@ -0,0 +1,43 @@
+#include <bits/stdc++.h>
+using namespace std;
+/*
+中缀逻辑表达式转后缀逻辑表达式
+
+测试用例：
+0&(0|1|0)
+
+答案：
+001|0|&
+*/
+unordered_map<char, int> g{{'|', 1}, {'&', 2}};
+string s, t;
+stack<char> stk;
+
+int main() {
+    cin >> s;
+    for (int i = 0; i < s.size(); i++) {
+        if (isdigit(s[i]) || isalpha(s[i]))
+            t += s[i];
+        else if (s[i] == '(')
+            stk.push(s[i]);
+        else if (s[i] == ')') {
+            while (stk.top() != '(') {
+                t += stk.top();
+                stk.pop();
+            }
+            stk.pop();
+        } else {
+            while (stk.size() && g[s[i]] <= g[stk.top()]) {
+                t += stk.top();
+                stk.pop();
+            }
+            stk.push(s[i]);
+        }
+    }
+    while (stk.size()) {
+        t += stk.top();
+        stk.pop();
+    }
+    cout << t << endl;
+    return 0;
+}