Questions tagged [balanced-delimiters]
When delimiters (a character or sequence marking the beginning, end, or boundary of a unit of data) are correctly placed (often in pairs) within a sequence or sequences of data.
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Check if parentheses are balanced using a stack implemented with a linked list
Problem: Stacks can be used to check whether the given expression has balanced symbols. This algorithm is very useful in compilers. Each time the parser reads one character at a time. If the character ...
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Leetcode problem: minimum removal to make valid parentheses
I was working on this problem on leetcode
Question
Your task is to remove the minimum number of parentheses ( '(' or
')', in any positions ) so that the resulting parentheses string is
valid and ...
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follow-up - Checking Nested Bracket Levels in Strings Programming Challenge
A follow-up to this question, this post improves on test case issues.
To restate problem parameters, a given string S is considered closed if it:
Has a matching ...
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Programming Challenge - Capturing Bracket Levels
I don't have a formal description for this problem, but here are the parameters:
Given a string S check that each opening bracket has a matching closing bracket.
...
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answer
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Check for balanced brackets in JavaScript
Rules: You should create a function that receives a string with brackets, parentheses, or curly brackets, an example:
test('{A}')
The function must check that the ...
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C# code to check balanced brackets in a string
The code works, at least against the unit tests. But I would like input on how to refactor it. Or also maybe a way to do this without using temporary lists? I also have some special checks, like if ...
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Generate valid combinations of parentheses
Playing on leetcode coding problem: "Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses."
I realized that my understanding of Python was ...
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Retrieving top-level opening and closing sequences from a Python string
The problem I'm solving is a more complex version of pairing up opening and closing brackets.
Instead of matching only on ([{}]), I additionally need to match ...
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answer
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Parenthesis-realigning program
This is my code for an assignment. The task is to take a user input in form of a sequence of parenthesis' followed by an E to mark its end and determine whether it is a correct sequence (as an example ...
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2
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Bracket balance checker in Python
Implement a feature for a text editor to find errors in the usage of brackets in the code.
Input: sorted(list(zip(a, b))
Output: False
Input: ([{}, {}])
Output: True
Here's my implementation in ...
user203258
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answers
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Balanced parentheses using standard C++
Here is a small program for checking if the parentheses are balanced or not. I am new to the standard library, and this is my first program. How can I improve it?
Any kind of modifications or ...
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CareerCup (Bloomberg): Check if string is valid based on brackets
The goal of this problem is to determine if a string with brackets is valid. Below is a summary of the question from careercup.
Check if string s is valid based on brackets
...
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(Leetcode) Valid parentheses
This is a Leetcode problem -
Given a string containing just the characters '(', ')', '{', ...
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votes
3
answers
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Generate parentheses solution
I have coded a solution to build all valid permutations of parentheses.
My code is below.
I have a question on my code based on a comment by my PEP8 checker. It said that there was no need to ...
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votes
1
answer
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Generate all possible combination of n-pair parentheses
The task is taken from LeetCode
Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.
For example, given n = 3, a solution set is:
...
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1
answer
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Python program to remove invalid parentheses
This is a Leetcode problem -
Remove the minimum number of invalid parentheses in order to make the
input string valid. Return all possible results.
Note -
The input string may contain ...
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1
answer
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Given a string containing just parentheses, determine if the input string is valid
The task
is taken from leetcode
Given a string containing just the characters '(', ')', '{', '}', '['
and ']', determine if the input string is valid.
An input string is valid if:
...
- 3,953
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votes
1
answer
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Return all valid paren strings with a given length
The problem is
Given a non-negative integer n, return all valid parentheses strings
with n open parens and ...
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1
answer
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Check whether string of brackets are well-formed
The task
I asked similar questions here and here.
Given a string of round, curly, and square open and closing brackets,
return whether the brackets are balanced (well-formed).
For example, ...
- 3,953
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votes
2
answers
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Check whether string of braces, brackets, and parentheses is balanced
The Task
is taken from codewars:
Write a function that takes a string of braces, and determines if the
order of the braces is valid. It should return true if ...
- 3,953
1
vote
2
answers
2k
views
Minimum number of parentheses to be removed to make a string of parentheses balanced
The task:
Given a string of parentheses, write a function to compute the minimum
number of parentheses to be removed to make the string valid (i.e.
each open parenthesis is eventually closed).
...
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votes
2
answers
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Bracket matcher in Python
I would like to receive feedback on my coding interview for the following problem:
Bracket Match
A string of brackets is considered correctly matched if every opening
bracket in the string ...
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votes
2
answers
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Using the stack algorithm for parenthesis matching
I have used Stacks to check for brackets mismatch. (Parentheses matching problem using Stack algorithm)
Any suggestions on how to improve the code?
I have tried various examples and it works ...
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vote
2
answers
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Balanced parenthesis, with backslash escaping
Given a Balanced Parenthesis problem.
"Balanced Parenthesis
Create a program that checks if in a given string expression all the parenthesis are balanced.
For Example:
(test) - valid
...
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answers
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Looping through a string finding nested brackets
So I've been trying to check through a string, looping for, [ (start) and ] (end).
In this, I also have to check for nested ...
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Removing text inside brackets [closed]
The following function removes text inside parenthesis, also checks for balanced brackets. Example:
RemoveTextInsideParenthesis('Yahoo (Inc)') will return ...
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answers
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Find redundant braces in an input string
I am solving interview questions from here.
Problem : Write a program to validate if the input string has redundant braces
Return 0/1 :
...
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votes
2
answers
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votes
1
answer
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Stacks: Balanced Brackets Hacker Rank
Here is the general goal of this exercise:
For each string, print whether or not the string of brackets is balanced on a new line. If the brackets are balanced, print YES; otherwise, print NO.
...
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votes
1
answer
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Longest Valid Parentheses
This is the "Longest Valid Parentheses" problem from leetcode.com:
Given a string containing just the characters "(" and ")",
...
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votes
3
answers
5k
views
Check if a string contains matching brackets
Trying to solve a case for a set of multiple types of brackets.
...
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answer
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Check balanced brackets in a text
Given an input text that is a combination of {, }, [, ], (, ) characters, check whether the input text has balanced brackets or not.
This was a question from hackerrank, and the code below solves it ...
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answers
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Checking for balanced brackets in Python
I'm solving HackerRank "Stacks: Balanced Brackets" in Python.
A bracket is considered to be any one of the following characters: (,
...
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3
answers
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Find the corresponding closing parenthesis
Problem:
"Sometimes (when I nest them (my parentheticals) too much (like this
(and this))) they get confusing."
Write a function that, given a sentence like the one above, along with the ...
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votes
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answers
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LeetCode parentheses matching
I came across this question from LeetCode OJ where I am given a string containing parentheses and I need to find out if the string contains valid matching parentheses or not.
Given a string ...
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answers
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Checking for parentheses balance in C
A recent assignment asks me to create a program that checks for parentheses balance in a given string. As I can't find any duplicate questions that have code written in C, I decided to post another ...
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A counterexample in balanced parentheses
In this program I had to analyse if the parenthesis given are well balanced. For instance, input (()) is correct and input ())(()...
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Analyzing an arithmetic expression using stacks
I'm looking for some constructive (harsh) criticism of a homework I've done (the code works fine). Also Is there a better/another way to solve the exercise?
Exercise:
Read an arithmetic expression ...
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Balancing parentheses (),{},[] routine
I have written a simple routine to check if the number of parentheses balances, so [{}] would return true since all parentheses which are opened are closed in the ...
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Valid Parentheses Algorithm Effeciency
What do you think of my Algorithm?
I start to eliminate the nearest valid parentheses
and if string.length == 0 so it's valid
...
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2
answers
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views
isBalanced function for checking if string with brackets is balanced ([{}])
I wrote simple function for checking if string is balanced (with brackets ([{}])). It takes a string argument and need to return boolean value (true if string is ...
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3
answers
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Loop for finding proper grouping brackets
I've got this piece of code that you pass a string of special characters to and an index which points to a location in this string. The code will take the index, analyze the string, and return a new ...
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answer
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Print combinations of balanced parentheses
Solved the below problem. Would love to hear your feedback, especially on performance improvements (granted, the solution should remain recursive).
Especially concerned about the ...
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votes
1
answer
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Valid Parenthesis
Recently, I've solved the "Valid Parenthesis" problem on LeetCode:
Given a string containing just the characters '(', ')', <...
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votes
1
answer
6k
views
Reversing strings inside parentheses
How can I optimize this algorithm to reverse strings inside parentheses?
...
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votes
1
answer
3k
views
Check for valid parentheses nesting
I found this question on leetcode and that was my answer ... But someone told me it's too bad that it takes \$O(n^3)\$ I am not sure that it takes all that time ... and trying to find better ...
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Balanced smileys check algorithm (part 4)
This is a follow-up for here, for bug fixes and applied advice.
Problem
Your friend John uses a lot of emoticons when you talk to him on
Messenger. In addition to being a person who likes to ...
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Matching parentheses
I have a string that contains a random order of parenthesis {[()]}. I want to check if for any given parenthesis is there a matching closing one.
Example:
...
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answer
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Balanced smileys check algorithm (part 3)
This is a follow-up for here, for bug fixes and applied advice.
Problem
Your friend John uses a lot of emoticons when you talk to him on
Messenger. In addition to being a person who likes to ...
- 3,443
2
votes
2
answers
599
views
Balanced smileys check algorithm (part 2)
This is a follow-up for here.
Problem
Your friend John uses a lot of emoticons when you talk to him on
Messenger. In addition to being a person who likes to express himself
through ...
- 3,443