0 out of 464 challenges solved

Check Balanced Parentheses

Write a Python function `check_expression(expression: str) -> bool` that checks if the given string `expression` has balanced parentheses. The function should return `True` if the parentheses are balanced and `False` otherwise. The expression may contain the following types of parentheses: `()`, `{}`, and `[]`.

#### Example Usage
```python [main.nopy]
check_expression("{()}[{}]")  # True
check_expression("{()}[{]")   # False
check_expression("{()}[{}][]({})")  # True
```

#### Constraints
- The input string will only contain the characters `(){}[]`.
- An empty string is considered balanced.
from collections import deque

def check_expression(expression: str) -> bool:
    """
    Check if the given expression has balanced parentheses.

    Args:
        expression (str): The input string containing parentheses.

    Returns:
        bool: True if the parentheses are balanced, False otherwise.
    """
    # Initialize a stack to keep track of opening parentheses
    stack = deque()

    # Iterate through each character in the expression
    for char in expression:
        # Placeholder for implementation
        pass

    # Placeholder for final check
    return False