Ringkasan Tantangan
Given an array of browser commands, return an array with two values: the history as an array of URLs, and the index of the current page.
Given an array of browser commands, return an array with two values: the history as an array of URLs, and the index of the current page.
Valid commands are:
"URL" - Where URL is a web address ("freecodecamp.org" for example). Navigates to the given URL, adds it to the history at the next position, and discards any forward history."Back" - moves to the previous page in history, or stays on the current page if there isn’t one."Forward" - moves to the next page in history, or stays on the current page if there isn’t one.
For example, given ["freecodecamp.org", "freecodecamp.org/learn", "Back"], return [["freecodecamp.org", "freecodecamp.org/learn"], 0].