Package g2301_2400.s2390_removing_stars_from_a_string

Class Solution

java.lang.Object
g2301_2400.s2390_removing_stars_from_a_string.Solution
public class Solution extends java.lang.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 Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.lang.String
    removeStars(java.lang.String s)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • removeStars

      public java.lang.String removeStars(java.lang.String s)