#439 Snake to CamelCase

Implement a utility function that converts a snake_case string into camelCase.

Requirements

function snakeToCamel(input: string):

• Replace each underscore (_) followed by a character with the uppercase version of that character.
• Remove all underscores.
• Preserve all other characters (including digits).
• Leading or trailing underscores should be ignored (not produce uppercase).
• If the input is already in camelCase, return it unchanged.
• An empty string should return an empty string.

Examples

| Input | Output | |-------------------|---------------| | "hello_world" | "helloWorld"| | "convert_me_now"| "convertMeNow"| | "_private_var" | "privateVar"| | "alreadyCamel" | "alreadyCamel"|