leet-code/src/main/java/leetcode/editor/cn/ReverseSubstringsBetweenEachPairOfParentheses.java
2021-05-12 23:57:14 +08:00

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//给出一个字符串 s仅含有小写英文字母和括号
//
// 请你按照从括号内到外的顺序,逐层反转每对匹配括号中的字符串,并返回最终的结果。
//
// 注意,您的结果中 不应 包含任何括号。
//
//
//
// 示例 1
//
// 输入s = "(abcd)"
//输出:"dcba"
//
//
// 示例 2
//
// 输入s = "(u(love)i)"
//输出:"iloveu"
//
//
// 示例 3
//
// 输入s = "(ed(et(oc))el)"
//输出:"leetcode"
//
//
// 示例 4
//
// 输入s = "a(bcdefghijkl(mno)p)q"
//输出:"apmnolkjihgfedcbq"
//
//
//
//
// 提示:
//
//
// 0 <= s.length <= 2000
// s 中只有小写英文字母和括号
// 我们确保所有括号都是成对出现的
//
// Related Topics 栈
// 👍 75 👎 0
package leetcode.editor.cn;
import java.util.Stack;
//1190:反转每对括号间的子串
public class ReverseSubstringsBetweenEachPairOfParentheses {
public static void main(String[] args) {
//测试代码
Solution solution = new ReverseSubstringsBetweenEachPairOfParentheses().new Solution();
//dcba
System.out.println(solution.reverseParentheses("(abcd)"));
//iloveu
System.out.println(solution.reverseParentheses("(u(love)i)"));
//leetcode
System.out.println(solution.reverseParentheses("(ed(et(oc))el)"));
//apmnolkjihgfedcbq
System.out.println(solution.reverseParentheses("a(bcdefghijkl(mno)p)q"));
}
//力扣代码
//leetcode submit region begin(Prohibit modification and deletion)
class Solution {
public String reverseParentheses(String s) {
StringBuilder result = new StringBuilder();
Stack<String> stack = new Stack<>();
for (int i = 0; i < s.length(); i++) {
String str = s.substring(i, i + 1);
if (")".equals(str)) {
StringBuilder temp = new StringBuilder();
while (!"(".equals(stack.peek())) {
temp.append(new StringBuilder(stack.pop()).reverse());
}
if ("(".equals(stack.peek())) {
stack.pop();
}
if (stack.isEmpty()) {
result.append(temp);
} else {
stack.push(temp.toString());
}
} else if (stack.isEmpty() && !"(".equals(str)) {
result.append(str);
} else {
stack.push(str);
}
}
if (stack.size() == 1) {
return stack.pop();
}
while (!stack.isEmpty()) {
result.append(new StringBuilder(stack.pop()).reverse());
}
return result.toString();
}
}
//leetcode submit region end(Prohibit modification and deletion)
}