Questions tagged [palindrome]
Any sequence of units (typically letters or numbers) that are read the same way forward or backward.
259
questions
4
votes
4
answers
1k
views
Check if a binary tree is symmetric in Python
I have solved the following Leetcode problem.
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this binary tree [1,2,2,3,4,4,3] is symmetric....
- 169
3
votes
2
answers
772
views
Palindrome Algorithm and JUnit 5 Tests
I have a "Palindrome" class that has some functions for verifying if certain things are Palindromes. For the verification, I have 2 different algorithms, one being recursive and the other ...
- 231
2
votes
4
answers
984
views
Python palindrome checker function
For practice purposes I implemented a function that checks for palindromes:
...
- 41
3
votes
1
answer
696
views
Optimizing code solution for Palindrome Index-Hackerrank
I submitted my solution for palindrome Index coding challenge but I get "test cases terminated due to time out error". My code is working and so I don't know what else to do to optimize it. Please ...
- 33
3
votes
0
answers
2k
views
HackerRank's Challenging Palindromes solution times out for certain tests
I am trying to solve the Challenging Palindromes problem from HackerRank. The code that I have got so far fails only for large inputs due to timeout, every other test it passes successfully.
The ...
- 31
3
votes
1
answer
83
views
A fast generator of palindrome dates in chronological order
02/02/2020 is a palindrome day because reading the date left-to-right or right-to-left still refers to the same calendar date. And because it doesn't
matter whether you use the DD/MM/YYYY format or ...
- 4,448
9
votes
5
answers
3k
views
Palindrome checker program
I've been studying Java for some days and I'm just now starting to make some simple programs, I'd like to know if there's any 'noob' mistakes or habits that I could avoid.
In other words: how could ...
- 637
7
votes
2
answers
2k
views
Python palindrome program
I have written a palindrome program. And I was just wondering if it correct? I checked using the words racecar and madam, and it says they are palindromes. I have also tested nonpalindrome words and ...
1
vote
0
answers
126
views
How do I optimize memoization in order to find longest palindromic substring?
I want to find the longest palindromic substring using dynamic programming in Python3. The strings can be as large as this string.
I have seen other questions on this problem that successfully solve ...
3
votes
0
answers
226
views
Longest palindrome code in C# takes time out on LeetCode
I like to request a review of the code below, which is my attempt at answering the question here on LeetCode site. The code passes 43 tests, but it times out on the next one. I copied and ran the test ...
- 103
0
votes
3
answers
122
views
Basic Palindrome check comparing chars
I've seen variations of this assignment where you reverse a string to match it to the original to find out if it is a palindrome, but this version I made only iterates through half of the string ...
- 675
6
votes
3
answers
954
views
CTCI Chapter 1 : Palindrome Permutation
Below is my code for the problem 1.4 in CTCI. I would like a review of my code and if my approach to the problem is correct.
Problem Statement:
Palindrome Permutation: Given a string, write a ...
- 61
3
votes
1
answer
271
views
Project Euler - Problem No.4 - Largest palindrome product
according to the problem:
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 × 99.
Find the largest palindrome made ...
- 279
4
votes
3
answers
2k
views
Palindrome test
This is some code that determines if a string of characters is a palindrome or not. My professor says that there is a performance issue with the program, but I can't quite put my finger on it. Can ...
- 51
3
votes
2
answers
689
views
Calculate the largest palindromic number from the product of two 6-digit numbers (100000 to 999999)
Are there any efficient ways to solve this problem,
for example using bitwise operator?
...
