This commit refactors the code by removing the unnecessary second argument in the conditional statement. The condition "if (obj[str[i]] && obj[str[i]] >= 1)" has been simplified to "if (obj[str[i]])" for improved readability and code conciseness. This change helps to streamline the logic and remove unnecessary complexity from the codebase.

Implemented the shortest approach to URLify a string. The URLify function utilizes the trim() method to remove leading and trailing spaces and the replaceAll() method to replace spaces with '%20'. This concise solution effectively replaces all spaces in the string with the desired URL encoding.