Is Generate Tag for Video Caption easy or hard?

Generate Tag for Video Caption is considered an Easy problem. The challenge mainly involves careful string traversal and formatting rules rather than complex data structures or algorithms.

Generate Tag for Video Caption Python/Java solution

Python and Java implementations both follow the same simulation logic. Traverse the caption, detect word boundaries, adjust capitalization, and append characters to a result string or StringBuilder. The algorithm remains O(n) in both languages.

How to solve Generate Tag for Video Caption in O(n)?

Iterate through the caption once and track when a new word begins. Append characters to the result while adjusting the first letter of each word to match the required tag format. Because each character is visited only once, the algorithm achieves O(n) time complexity.

What is the best approach for Generate Tag for Video Caption?

The best approach is a single-pass simulation that scans the caption character by character and builds the tag string directly. It formats each word appropriately while skipping spaces and separators. This runs in O(n) time and uses O(n) space for the final tag.

Is Generate Tag for Video Caption asked at Google/Amazon/Meta?

String formatting and simulation problems like this frequently appear in interviews at companies such as Google, Amazon, and Meta. While the exact problem may vary, tasks involving string parsing, capitalization rules, and tag generation are common practice questions.

What data structure is used in Generate Tag for Video Caption?

The problem mainly uses basic string manipulation. Most solutions build the result using a string builder or dynamic string while iterating through the input caption.

What is the time complexity of Generate Tag for Video Caption?

The optimal solution runs in O(n) time where n is the length of the caption. Each character is processed once while constructing the resulting tag. Space complexity is O(n) because a new formatted string is created.

Description Hints 1 Solution Video 9:17

3582. Generate Tag for Video Caption

Easy32.4% acceptance1 company

You are given a string caption representing the caption for a video.

The following actions must be performed in order to generate a valid tag for the video:

Combine all words in the string into a single camelCase string prefixed with '#'. A camelCase string is one where the first letter of all words except the first one is capitalized. All characters after the first character in each word must be lowercase.
Remove all characters that are not an English letter, except the first '#'.
Truncate the result to a maximum of 100 characters.

Return the tag after performing the actions on caption.

Example 1:

Input: caption = "Leetcode daily streak achieved"

Output: "#leetcodeDailyStreakAchieved"

Explanation:

The first letter for all words except "leetcode" should be capitalized.

Example 2:

Input: caption = "can I Go There"

Output: "#canIGoThere"

Explanation:

The first letter for all words except "can" should be capitalized.

Example 3:

Input: caption = "hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh"

Output: "#hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh"

Explanation:

Since the first word has length 101, we need to truncate the last two letters from the word.

Constraints:

1 <= caption.length <= 150
caption consists only of English letters and ' '.

Asked at 1 company

Bloomberg

Topics

Simulation String

Hints open one at a time

Hint 1

Simulate as described

9:17

Still stuck?Read the written solution, or watch a walkthrough.

Open solution

LanguageLoading editor…

1class Solution:
2    def generateTag(self, caption: str) -> str:
3        

Starter codePython 3Spaces: 4

Examples

Case 1Case 2Case 3

Input

"Leetcode daily streak achieved"

Input

"can I Go There"

Input

"hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh"

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