5 docs tagged with "String"

Implement a Trie data structure for efficient string storage and prefix searching.

Convert a Roman numeral string into its corresponding integer value.

Determine if a given string is a palindrome after converting all uppercase letters to lowercase and removing all non-alphanumeric…

Given a string containing only parentheses, determine if the brackets are correctly matched and ordered.

Given a string and a number of rows, arrange the string in a zigzag pattern and then read it line by line to produce a new string.