Package g0301_0400.s0316_remove_duplicate_letters

Class Solution

java.lang.Object
g0301_0400.s0316_remove_duplicate_letters.Solution
public class Solution extends java.lang.Object
316 - Remove Duplicate Letters.

Medium

Given a string s, remove duplicate letters so that every letter appears once and only once. You must make sure your result is the smallest in lexicographical order among all possible results.

Example 1:

Input: s = “bcabc”

Output: “abc”

Example 2:

Input: s = “cbacdcbc”

Output: “acdb”

Constraints:

  • 1 <= s.length <= 104
  • s consists of lowercase English letters.

Note: This question is the same as 1081.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.lang.String
    removeDuplicateLetters(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

    • removeDuplicateLetters

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