All Questions
Tagged with programming-challenge strings
212
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String represents a road. One character travels on the road obeying the stops - Code challenge (advent.js day 5)
This is my code to solve the 5th Adventjs challenge. In that link you can read the instructions.
How can I improve it? It's a bit messy... and I'm repeating some part of the code.
All must be in just ...
4
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3
answers
825
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Codewars: Multiplying Polynomials
I'm trying to solve the following Kata from Codewars in Python.
My code produces the desired result for all the tests, yet it is not optimal, so it takes too much time to accomplish the big tests.
<...
2
votes
1
answer
173
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An evolutionary algorithm written in Java to crack an XOR cipher
Alright. So TryHackme is a website that tries to teach hacking with hands on labs. They have a room called JVM Reverse Engineering where the user gets to reverse engineer Java apps, and in particular ...
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2
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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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1
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2
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Find longest palindrome in a string (LeetCode problem 5)
The code below is my solution to the following problem (problem #5 on LeetCode):
Given a string s, return the longest palindromic substring in s.
I wonder whether my use of iterators is an overkill. ...
- 173
2
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3
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Find the 'n' most frequent words in a text, aka word frequency
I'm doing freeCodeCamp's Coding Interview Prep to improve my JavaScript skills. This challenge is called "Word Frequency", and is based on the Rosetta Code's entry of the same name.
The ...
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2
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3
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197
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Phrase to acronym in C from exercism.io
I am learning C and doing challenges like those found on exercism.io and the various data structure & algorithm sites.
I have a sense that while this works and it makes sense to me that it can be ...
- 121
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First non-repeating Character, with a single loop in Python
I recently tried to solve the first non-repeating character problem. Please tell me if my solution is valid. I'm aiming for O(n) with a single loop.
My thinking is, it would be easy to tell you what ...
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2
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2
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973
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InterviewBit Problem: Stringoholics
I am trying to solve this InterviewBit problem.
Problem Statement:
You are given an array A consisting of strings made up of the letters
‘a’ and ‘b’ only. Each string goes through a number of ...
- 302
6
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1
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628
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LeetCode 1638: Count Substrings That Differ by One Character
I'm posting a solution for LeetCode's "Count Substrings That Differ by One Character". If you'd like to review, please do. Thank you!
Problem
Given two strings s and t, find the number of ...
- 3,517
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LeetCode on Longest Palindromic Substring in Python
This is a programming question from LeetCode:
Given a string s, return the longest palindromic substring in s.
Example 1:
Input: s = "babad" Output: "bab" Note: "aba" is ...
user5235
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4
answers
2k
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C#: Repeated String
From HackerRank "Repeated String" challenge:
Lilah has a string, \$s\$, of lowercase English letters that she repeated
infinitely many times.
Given an integer, \$n\$, find and print the ...
- 169
4
votes
1
answer
168
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LeetCode: Find And Replace in String C#
It took me a while to solve this question and there are corner cases i missed hence the 4 unit tests.
please review for performance. and if you can treat this as a review for a 45 mins programming ...
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2
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2
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350
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Exercism: determine if a word or phrase is an isogram
The task:
Determine if a word or phrase is an isogram.
An isogram (also known as a "nonpattern word") is a word or phrase without a repeating letter, however spaces and hyphens are allowed ...
6
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3
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972
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C: function to read a token from stdin
I recently started doing some competitive programming in C and one of my first requirements was a high-speed token reader (analogous to the java Scanner class' <...
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