Remove Duplicate Letters - Practice Coding | SlaveCode
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316. Remove Duplicate Letters
Medium
30 Points
String
Stack
Greedy
Monotonic Stack
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.
Examples
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.
316. Remove Duplicate Letters
Medium
30 Points
String
Stack
Greedy
Monotonic Stack
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.