Here is a step-by-step solution in Python:

1. Initialize an empty stack.

2. Iterate over the characters in the string.

3. If the current character is not a closing bracket ')', push it onto the stack.

4. If the current character is a closing bracket ')', pop characters from the stack until you encounter an opening bracket '('. Keep track of these characters.

5. Reverse the characters popped in the previous step and push them back onto the stack.

6. Continue this process until you have iterated over all the characters in the string.

7. Finally, pop all the characters from the stack and reverse them. This is the final output.

Here is the Python code for the above steps:

```python
def reverseParentheses(s):
stack = []
for char in s:
if char != ')':
stack.append(char)
else:
temp = ''
while stack and stack[-1] != '(':
temp += stack.pop()
stack.pop() # pop the '('
for c in temp:
stack.append(c)
return ''.join(stack[::-1])
```

This function works by using a stack to keep track of the characters inside each pair of parentheses. When it encounters a closing bracket, it pops all the characters until it finds an opening bracket, effectively reversing the order of the characters inside the parentheses. It then pushes these characters back onto the stack. At the end of the function, it reverses the entire stack to get the final output.

Question

Here is a step-by-step solution in Python:

1. Initialize an empty stack.

2. Iterate over the characters in the string.

3. If the current character is not a closing bracket ')', push it onto the stack.

4. If the current character is a closing bracket ')', pop characters from the stack until you encounter an opening bracket '('. Keep track of these characters.

5. Reverse the characters popped in the previous step and push them back onto the stack.

6. Continue this process until you have iterated over all the characters in the string.

7. Finally, pop all the characters from the stack and reverse them. This is the final output.

Here is the Python code for the above steps:

```python
def reverseParentheses(s):
    stack = []
    for char in s:
        if char != ')':
            stack.append(char)
        else:
            temp = ''
            while stack and stack[-1] != '(':
                temp += stack.pop()
            stack.pop()  # pop the '('
            for c in temp:
                stack.append(c)
    return ''.join(stack[::-1])
```

This function works by using a stack to keep track of the characters inside each pair of parentheses. When it encounters a closing bracket, it pops all the characters until it finds an opening bracket, effectively reversing the order of the characters inside the parentheses. It then pushes these characters back onto the stack. At the end of the function, it reverses the entire stack to get the final output.

Knowee AI · Accepted Answer

Here is a step-by-step solution in Python:

1. Initialize an empty stack.

2. Iterate over the characters in the string.

3. If the current character is not a closing bracket ')', push it onto the stack.

4. If the current character is a closing bracket ')', pop characters from the stack until you encounter an opening bracket '('. Keep track of these characters.

5. Reverse the characters popped in the previous step and push them back onto the stack.

6. Continue this process until you have iterated over all the characters in the string.

7. Finally, pop all the characters from the stack and reverse them. This is the final output.

Here is the Python code for the above steps:

```python
def reverseParentheses(s):
    stack = []
    for char in s:
        if char != ')':
            stack.append(char)
        else:
            temp = ''
            while stack and stack[-1] != '(':
                temp += stack.pop()
            stack.pop()  # pop the '('
            for c in temp:
                stack.append(c)
    return ''.join(stack[::-1])
```

This function works by using a stack to keep track of the characters inside each pair of parentheses. When it encounters a closing bracket, it pops all the characters until it finds an opening bracket, effectively reversing the order of the characters inside the parentheses. It then pushes these characters back onto the stack. At the end of the function, it reverses the entire stack to get the final output.

You are given a string s that consists of lower case English letters and brackets.Reverse the strings in each pair of matching parentheses, starting from the innermost one.Your result should not contain any brackets.

Question

Solution

Similar Questions

Upgrade your grade with Knowee