33 lines
796 B
C++
33 lines
796 B
C++
#include <iostream>
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#include <string>
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/**
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* 856. Score of Parentheses
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* Given a balanced parentheses string s, return the score of the string.
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* The score of a balanced parentheses string is based on the following rule:
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* - "()" has score 1.
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* - AB has score A + B, where A and B are balanced parentheses strings.
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* - (A) has score 2 * A, where A is a balanced parentheses string.
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*/
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class Solution {
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public:
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static int scoreOfParentheses(const std::string& s) {
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int stack[30], top = -1, ret = 0;
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for (char ch : s) {
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if (ch == '(') {
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stack[++top] = 0;
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} else { // ch == ')'
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*(top ? &stack[top - 1] : &ret) += (stack[top] ? stack[top] << 1 : 1);
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--top;
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}
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}
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return ret;
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}
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};
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int main() {
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std::cout << Solution::scoreOfParentheses("((())())");
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return 0;
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}
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