28 lines
732 B
C++
28 lines
732 B
C++
#include <bits/stdc++.h>
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using namespace std;
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const int N = 100010;
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//用数组模拟栈
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char stk[N], tt; //内容是第几个
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//原字符串
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string s;
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int b[N];
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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 (s[i] == '(' || s[i] == '[') stk[++tt] = i;
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else {
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if (s[i] == ')' && s[stk[tt]] == '(') b[i] = b[stk[tt]] = 1,tt--;
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else if (s[i] == ']' && s[stk[tt]] == '[') b[i] = b[stk[tt]] = 1,tt--;
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}
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}
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//输出
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for (int i = 0; i < s.size(); i++) {
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if (b[i]) cout << s[i];
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else if (s[i] == '(' || s[i] == ')') cout << "()";
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else if (s[i] == '[' || s[i] == ']') cout << "[]";
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}
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return 0;
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} |