Removing Stars From a String

You are given a string s, which contains stars *.

In one operation, you can:

• Choose a star in s.
• Remove the closest non-star character to its left, as well as remove the star itself.

Return the string after all stars have been removed.

Note:

• The input will be generated such that the operation is always possible.
• It can be shown that the resulting string will always be unique.

Examples

Example 1:

Input: s = "leet**cod*e"

Output: "lecoe"

Explanation: Performing the removals from left to right:

• The closest character to the 1st star is 't' in "leet**cod*e". s becomes "lee*cod*e".
• The closest character to the 2nd star is 'e' in "lee*cod*e". s becomes "lcod*e".
• The closest character to the 3rd star is 'd' in "lcod*e". s becomes "lcoe".

There are no more stars, so we return "lcoe".

Example 2:

Input: s = "erase*****"

Output: ""

Constraints

• 1 <= s.length <= 10^5
• s consists of lowercase English letters and stars *
• The operation above can be performed on s