Convert String to Lowercase and Add Hyphens After Each Character

nvidia Basic Programming Task: Please implement a function to convert all uppercase letters in a given string to lowercase and add a hyphen after each letter in the string. For example, given the input 'A1B2C', the output should be 'a-1-b-2-c-'. Provide full code and outline the following test cases: Input: 'XYZ' Output: 'x-y-z-' Input: 'AbC' Output: 'a-b-c-' Input: '1A2' Output: '1-a-2-' Input: '' Output: '' Input: '123' Output: '1-2-3-' Example Input XYZ