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Questions tagged [palindrome]

Any sequence of units (typically letters or numbers) that are read the same way forward or backward.

3 votes
1 answer
381 views

Palindromic partitions solution

Task Find the smallest number of cuts required to break a string into a set of valid palindromes. For example: ababbbabbababa becomes a|babbbab|b|ababa (cuts = 3) partytrapb becomes partytrap|b (...
MrJoe's user avatar
  • 2,053
1 vote
1 answer
237 views

Palindrome Pairs

The task is taken from leetcode Given a list of unique words, find all pairs of distinct indices (i, j) in the given list, so that the concatenation of the two words, i.e. words[i] + words[j] ...
thadeuszlay's user avatar
  • 3,993
3 votes
0 answers
229 views

Longest Palindrome Substring: Where is the dynamic programming? [closed]

In this LeetCode problem, Longest Palindromic Substring, it is listed under Dynamic Programming for Google interview preparation. My understanding of dynamic programming is roughly "recursion + ...
Scott Skiles's user avatar
4 votes
4 answers
297 views

Largest Palindrome Product - Project Euler #4

This is my code for Project Euler Problem #4 The question: 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 ...
Eagle's user avatar
  • 255
-1 votes
1 answer
74 views

Why does my function think that "uiouioiu"is a plaindrome? [closed]

I was reading Introduction to Computation and Programming using Python and there in an exercise, we had to write a function which would tell us if a given word is a palindrome or not, recursively. ...
user avatar
6 votes
3 answers
2k views

Determine whether an integer is a palindrome

The task Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Input: 121 Output: true Example 2: ...
thadeuszlay's user avatar
  • 3,993
4 votes
1 answer
231 views

Return whether a string is a palindrome if you can delete at most k elements

The task: Given a string which we can delete at most k, return whether you can make a palindrome. For example, given 'waterrfetawx' and a k of 2, you could delete f and x to get '...
thadeuszlay's user avatar
  • 3,993
11 votes
5 answers
1k views

Easy to read palindrome checker

I made a palindrome checker that's supposed to be designed to be simple and easy to read. Please let me know what you think. I believe the time complexity is \$\mathcal{O}(n)\$ but I'm not too sure ...
DreamVision2017's user avatar
4 votes
2 answers
499 views

Longest Palindromic Substring better approach

I have encountered to this question and applied a brute force algorithm off top of my head and couldn't find a better optimized solution. I was hoping I could get some insight to implement a better ...
Ugur Yilmaz's user avatar
1 vote
1 answer
189 views

Check if given integer is a palindrome

This code checks if the given integer is a palindrome. If it is, prints given integer is a palindrome else, not a palindrome: ...
Suresh2019's user avatar
1 vote
4 answers
323 views

Read a palindrome of unknown length

I have a task to write the function: int read_palindrome(); // input comes from stdin which will read one line from standard input and returns 1 if the line is a ...
Prashin Jeevaganth's user avatar
2 votes
1 answer
287 views

Find palindromes in circular rotated string

I'm trying to tackle a programming challenge to determine how many palindromes exist in a given string that is being rotated character by character. My solution works, but it's too slow, and I'm ...
AnonymousSB's user avatar
10 votes
2 answers
504 views

Determining if a string can be permuted to a palindrome

I am going through Elements of Programming Interview by Aziz, Lee and Prakash one of the questions is how to determine if a string can be permuted to a palindrome. For example ...
mjl007's user avatar
  • 203
2 votes
0 answers
213 views

Longest Palindromic Substring challenge

My code is a mix-up between dynamic programming with the HashMap and brute force with the way I reach out the results and substring. I don't know how to optimize my ...
Manu Carba's user avatar
4 votes
2 answers
104 views

Solve Project Euler #4 in PHP

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 from the product of two 3-digit ...
Luke's user avatar
  • 329

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