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.
68
questions
4
votes
2answers
104 views
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 ...
8
votes
1answer
90 views
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 ...
5
votes
2answers
639 views
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 ...
9
votes
2answers
4k views
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 ...
3
votes
1answer
72 views
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
...
0
votes
2answers
586 views
(Leetcode) Valid parentheses
This is a Leetcode problem -
Given a string containing just the characters '(', ')', '{', ...
4
votes
3answers
453 views
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 ...
4
votes
1answer
787 views
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:
...
1
vote
2answers
808 views
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 ...
6
votes
1answer
2k views
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:
...
4
votes
1answer
162 views
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 ...
1
vote
1answer
163 views
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, ...
4
votes
2answers
272 views
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 ...
1
vote
2answers
1k 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).
...
2
votes
2answers
229 views
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 ...
2
votes
2answers
577 views
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 ...
1
vote
2answers
324 views
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
...
6
votes
2answers
3k views
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 ...
3
votes
0answers
136 views
Removing text inside brackets [closed]
The following function removes text inside parenthesis, also checks for balanced brackets. Example:
RemoveTextInsideParenthesis('Yahoo (Inc)') will return ...
3
votes
0answers
612 views
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 :
...
4
votes
2answers
3k views
3
votes
1answer
2k views
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.
...
2
votes
1answer
791 views
Longest Valid Parentheses
This is the "Longest Valid Parentheses" problem from leetcode.com:
Given a string containing just the characters "(" and ")",
...
3
votes
3answers
4k views
Check if a string contains matching brackets
Trying to solve a case for a set of multiple types of brackets.
...
3
votes
1answer
413 views
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 ...
30
votes
6answers
66k views
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: (,
...
4
votes
3answers
6k views
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 ...
5
votes
5answers
2k views
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 ...
9
votes
4answers
4k views
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 ...
9
votes
2answers
2k views
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 ())(()...
1
vote
1answer
466 views
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 ...
5
votes
2answers
1k views
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 ...
3
votes
2answers
359 views
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
...
4
votes
2answers
2k 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 ...
2
votes
3answers
267 views
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 ...
5
votes
1answer
259 views
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 ...
6
votes
1answer
10k views
Valid Parenthesis
Recently, I've solved the "Valid Parenthesis" problem on LeetCode:
Given a string containing just the characters '(', ')', <...
2
votes
1answer
5k views
Reversing strings inside parentheses
How can I optimize this algorithm to reverse strings inside parentheses?
...
7
votes
1answer
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 ...
3
votes
2answers
504 views
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 ...
3
votes
2answers
2k views
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:
...
5
votes
1answer
412 views
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 ...
2
votes
2answers
511 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 ...
4
votes
2answers
221 views
Matched Brackets challenge
I am attempting the matched brackets problem. I have written a Python program which seems to do the job but is very slow and thus exceeds the time limit. Please help me making this code more efficient....
8
votes
4answers
5k views
Balanced Parentheses checker in Python
I'd appreciate feedback on the code itself (style, performance optimization (both space and time)), and also on the algorithm (because I think this is typically implemented using a stack).
The ...
2
votes
1answer
451 views
Balanced smileys check algorithm
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 emoticons, he hates unbalanced ...
3
votes
3answers
2k views
Check if all of the delimiters in an expression are matched and closed
Problem
Write an algorithm to determine if all of the delimiters in an
expression are matched and closed.
{(abc)22}[14(xyz)2] should pass
...
6
votes
5answers
6k views
Validate that brackets are balanced
I've done a test for a job (which I failed) and I'd like to know in which ways my code could've been better.
Here are the questions and my answers, it's not very long.
1) Make a program that ...
2
votes
2answers
447 views
Check syntax (string and character comparison)
I would like to know if my function that checks if a string syntax is correct. It's currently very messy, but seems to do the job.
...
1
vote
1answer
885 views
Check for balanced parentheses in JavaScript
I just implemented the balanced parentheses problem in JavaScript. For those of you who are new to this problem, a statement of it would be:
Give a string of parentheses (including braces and ...
