Parentheses-Problems

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C++ Program To Check For Balanced Brackets In An Expression (Well-Formedness) Using Stack

Last updated: 17 August 2023

Given an expression string exp, write a program to examine whether the pairs and the orders of "{", "}", "(", ")", "[", "]" are correct in exp.Example: Input: exp = "[()]{...read more

Strings

Amazon

Oracle

Walmart

Java Program To Check For Balanced Brackets In An Expression (Well-Formedness) Using Stack

Last updated: 14 December 2021

Given an expression string exp, write a program to examine whether the pairs and the orders of "{", "}", "(", ")", "[", "]" are correct in exp.Example: Input: exp = "[()]{...read more

Javascript Program To Check For Balanced Brackets In An Expression (Well-Formedness) Using Stack

Last updated: 14 December 2021

Given an expression string exp, write a program to examine whether the pairs and the orders of "{", "}", "(", ")", "[", "]" are correct in exp.Example: Input: exp = "[()]{...read more

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Minimum number of bracket reversals needed to make an expression balanced | Set - 2

Last updated: 21 April 2021

Given an expression with only '}' and '{'. The expression may not be balanced. The task is to find minimum number of bracket reversals to make the expression balanced.Exam ...read more

Check for balanced parentheses in Python

Last updated: 03 January 2023

Given an expression string, write a python program to find whether a given string has balanced parentheses or not.Examples:Input : {[]{()}}Output : BalancedInput : [{}{}(] ...read more

Count pairs of parentheses sequences such that parentheses are balanced

Last updated: 13 September 2022

Given N bracket sequences, the task is to find the number of pairs of bracket sequences by joining which can be obtained a balanced bracket sequence as a whole. A bracket ...read more

Strings

Competitive Programming

Number of closing brackets needed to complete a regular bracket sequence

Last updated: 09 September 2022

Given an incomplete bracket sequence S. The task is to find the number of closing brackets ')' needed to make it a regular bracket sequence and print the complete bracket ...read more

Minimum number of Parentheses to be added to make it valid

Last updated: 09 May 2023

Given a string S of parentheses '(' or ')' where,[Tex]0\leq len(S)\leq 1000[/Tex]. The task is to find a minimum number of parentheses '(' or ')' (at any positions) we mus ...read more

Arithmetic Expression Evaluation

Last updated: 19 June 2023

The stack organization is very effective in evaluating arithmetic expressions. Expressions are usually represented in what is known as Infix notation, in which each operat...read more

Data Structures-Stack

expression-evaluation

Parentheses-Problems

DSA

Check for balanced parentheses in an expression | O(1) space

Last updated: 18 August 2022

Given a string of length n having parentheses in it, your task is to find whether given string has balanced parentheses or not. Please note there is constraint on space i. ...read more

Arrays

Strings

C-String

expression-evaluation

Parentheses-Problems

DSA

Length of longest balanced parentheses prefix

Last updated: 18 July 2023

Given a string of open bracket '(' and closed bracket ')'. The task is to find the length of longest balanced prefix.Examples:Input : S = "((()())())((" Output : 10From in ...read more

Strings

Parentheses-Problems

DSA

Remove Invalid Parentheses

Last updated: 18 September 2023

An expression will be given which can contain open and close parentheses and optionally some characters, No other operator will be there in string. We need to remove minim ...read more

Backtracking

Parentheses-Problems

DSA

Find the number of valid parentheses expressions of given length

Last updated: 15 March 2023

Given a number n find the number of valid parentheses expressions of that length.Examples :Input: 2Output: 1 There is only possible valid expression of length 2, "()"Input ...read more

Print all combinations of balanced parentheses

Last updated: 19 September 2023

Given a number n, the task is to generate all possible n pairs of balanced parentheses.Examples:Input: n=1Output: {}Explanation: This the only sequence of balanced parenth ...read more

Check for Balanced Brackets in an expression (well-formedness)

Last updated: 04 May 2023

Given an expression string exp, write a program to examine whether the pairs and the orders of "{", "}", "(", ")", "[", "]" are correct in the given expression.Example:Inp...read more

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