LeetCode Variants: Strings and Arrays | Dataford Interview Questions

Tell me about the LeetCode-style variants you practiced, especially those involving string and array manipulation.

For this hands-on variant, implement an algorithm that groups anagrams from an array of lowercase strings. Preserve the order in which groups first appear and preserve the original order within each group.

Input: a list of strings. Output: a list of grouped string lists.

Constraints

1 <= len(words) <= 5000
0 <= len(words[i]) <= 100
Each word contains only lowercase English letters
Groups must preserve first-appearance order
Words within each group must preserve input order

Function Signature

def group_anagrams(words):

Your question is LeetCode Variants: Strings and Arrays. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Tell me about the LeetCode-style variants you practiced, especially those involving string and array manipulation.

Input: a list of strings. Output: a list of grouped string lists.

Constraints

1 <= len(words) <= 5000
0 <= len(words[i]) <= 100
Each word contains only lowercase English letters
Groups must preserve first-appearance order
Words within each group must preserve input order

Function Signature

def group_anagrams(words):

Your question is LeetCode Variants: Strings and Arrays. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.