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Coding Test
[LeetCode] Validate Parentheses
https://leetcode.com/problems/valid-parentheses/ Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Open brackets must be closed by the same type of brackets.Open brackets must be closed in the correct order. Example 1: Input: s = "()" Output: true Example 2: Input: s = "()[]{}" Output: true Exampl..
→2022.04.23
Coding Test
[Codility] Stacks and Queues. Brackets
https://app.codility.com/programmers/lessons/7-stacks_and_queues/brackets/ A string S consisting of N characters is considered to be properly nested if any of the following conditions is true: S is empty;S has the form "(U)" or "[U]" or "{U}" where U is a properly nested string;S has the form "VW" where V and W are properly nested strings. For example, the string "{[()()]}" is properly nested bu..
→2021.08.14

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