Leetcode Problem 1410. HTML Entity Parser

1410. HTML Entity Parser

Leetcode Solutions

HashMap and StringBuilder Approach

  1. Initialize a HashMap with HTML entities as keys and their corresponding characters as values.
  2. Initialize a StringBuilder to build the output string.
  3. Iterate through the input string character by character.
  4. If the current character is an ampersand '&', attempt to find the end of an HTML entity.
  5. If a valid entity is found, append the corresponding character to the StringBuilder.
  6. If no valid entity is found or the character is not an ampersand, append the current character to the StringBuilder.
  7. Continue until the end of the input string is reached.
  8. Convert the StringBuilder to a string and return it.
UML Thumbnail

Direct Substring Replacement Approach

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