👉 In computer science, a backspace is a string of characters that represents a sequence of operations performed on a given input string. Backspaces are particularly useful in programming to perform various operations such as removing parentheses, brackets, braces, and other character sequences. The basic operation of backspaces is: 1. Remove the first character from the input string. 2. If there's any remaining characters after removal, remove them one by one. 3. Once all characters have been removed, return the final string