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 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 1^st star is ‘t’ in “lee**t****cod*e”. s becomes “lee*cod*e”.

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

• The closest character to the 3^rd 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 and Description
Solution()

Method Summary

Modifier and Type	Method and Description
String	removeStars(String s)

Methods inherited from class java.lang.Object

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

Constructor Detail

Solution

public Solution()

Method Detail

removeStars

public String removeStars(String s)