Valid ParenthesesRachel is studying nested structures and wants to validate if a given string of parentheses is valid. A valid string has matching opening and closing parentheses in the correct order.Constraints:NAExample:Sample Input:()[]{}Sample Output:trueExplanation:In the above example, the string is valid because every opened parentheses is closed in the correct order and the output is truePublic Test Cases:# INPUT EXPECTED OUTPUT1 ()[]{}true

Check for Balanced ParenthesesWrite a function that takes a string of parentheses and checks if the parentheses are balanced using a stack.Constraints:NAExample:Sample Input-1:(())Sample Output-1:trueSample Input-2:((Sample Output-2:falseExplanation:In both of these examples, parentheses must appear in a balanced fashion. Balanced parentheses means that each opening symbol has a corresponding closing symbol and the pairs of parentheses are properly nested.Public Test Cases:# INPUT EXPECTED OUTPUT1 (())true2 ((false

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.Every close bracket has a corresponding open bracket of the same type. Example 1:Input: s = "()"Output: trueExample 2:Input: s = "()[]{}"Output: trueExample 3:Input: s = "(]"Output: false Constraints:1 <= s.length <= 104s consists of parentheses only '()[]{}'.

Given a bracket sequence 𝑠 of length 𝑛, you are to determine if it is valid!A valid bracket sequence is defined recursively as:“”(𝑥) where 𝑥 is a valid bracket sequence[𝑥] where 𝑥 is a valid bracket sequence{𝑥} where 𝑥 is a valid bracket sequence𝑥𝑦, where 𝑥 and 𝑦 are valid bracket sequencesInputThe first line of each contains one integer 𝑛 (2≤𝑛≤100000) — the length of the bracket sequence.The second line of each test case contains a string 𝑠 — the bracket sequence in the question. It is guaranteed that 𝑠 only contains ()[]{} as characters.OutputOutput Valid if the sequence is a valid bracket sequence, otherwise output Invalid.Sample Input 1 Sample Output 16([]{})ValidSample Input 2 Sample Output 28(())((()InvalidSample Input 3 Sample Output 36([}{])Invalid

Given a string s of '(' , ')' and lowercase English characters.Your task is to remove the minimum number of parentheses ( '(' or ')', in any positions ) so that the resulting parentheses string is valid and return any valid string.Formally, a parentheses string is valid if and only if:It is the empty string, contains only lowercase characters, orIt can be written as AB (A concatenated with B), where A and B are valid strings, orIt can be written as (A), where A is a valid string. Example 1:Input: s = "lee(t(c)o)de)"Output: "lee(t(c)o)de"Explanation: "lee(t(co)de)" , "lee(t(c)ode)" would also be accepted.

The data structure required to check whether an expression contains a balanced parenthesis is?