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Learn how to check if a string of balanced expression contains a redundant parenthesis or not. See examples, constraints, and code solution for this medium-level problem.
Jun 28, 2023 · Learn how to check if a string of balanced expressions has any redundant parenthesis using stack. See examples, code and explanation of the algorithm.
Dec 11, 2020 · Learn how to identify and remove redundant brackets in mathematical expressions using stack. See the input, output and constraints of this coding problem and the solution approach.
Given a valid expression containing only binary operators '+', '-', '*', '/' and operands, remove all the redundant parenthesis. A set of parenthesis is said to be redundant if, removing them, does not change the value of the expression.
A pair of brackets is said to be redundant when a subexpression is surrounded by needless/ useless brackets. For Example : ((a+b)) has a pair of redundant brackets. The pair of brackets on the first and last index is needless. While (a + (b*c)) does not have any pair of redundant brackets.
Learn how to solve a hard problem on LeetCode that involves removing the minimum number of invalid parentheses from a string. See examples, constraints, and discussion on this real interview question.
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Sep 28, 2022 · Learn how to check if an expression has redundant brackets using stack data structure and algorithm. See examples, code implementation and time and space complexity analysis.
