Package g2301_2400.s2390_removing_stars_from_a_string

Class Solution

  • public class Solution
extends Object
    2390 - Removing Stars From a String.

    Medium

    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.

    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 “lee**t****cod*e”. s becomes “lee*cod*e”.

    • The closest character to the 2nd star is ‘e’ in “le**e***cod*e”. s becomes “lecod*e”.

    • The closest character to the 3rd star is ‘d’ in “leco**d***e”. s becomes “lecoe”.

    There are no more stars, so we return “lecoe”.

    Example 2:

    Input: s = “erase*****”

    Output: ""

    Explanation: The entire string is removed, so we return an empty string.

    Constraints:

    • 1 <= s.length <= 105
    • s consists of lowercase English letters and stars *.
    • The operation above can be performed on s.

    • Constructor Detail

      • Solution

        public Solution()