Python: Determine if the input string has valid parentheses
Video 47: The task is to determine whether a given string, consisting of the characters '(', ')', '{', '}', '[', and ']', contains valid parentheses.
For a string to be considered valid:
1. Open brackets must be closed by the same type of brackets.
2. Open brackets must be closed in the correct order.
3. An empty string is also considered valid
To assess the validity of the string, a dictionary is utilized, mapping each closing bracket to its corresponding open bracket. By iterating through the string, the code ensures that for each closing bracket encountered, it matches the correct opening bracket in sequence. Any mismatch results in an immediate return of False. Conversely, if all brackets match their appropriate pairs, the given string is deemed valid.
In this discussion, three different approaches for iterating through the input string and validating the order and placement of open and close brackets were explored.
For comprehensive Python code and supplementary sample data, please refer to the GitHub file provided below.
code: https://github.com/jeganpillai/python...
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