g0701_0800.s0784_letter_case_permutation.readme.md Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of leetcode-in-java17 Show documentation
Show all versions of leetcode-in-java17 Show documentation
Java Solution for LeetCode algorithm problems, continually updating
784\. Letter Case Permutation
Medium
Given a string `s`, you can transform every letter individually to be lowercase or uppercase to create another string.
Return _a list of all possible strings we could create_. Return the output in **any order**.
**Example 1:**
**Input:** s = "a1b2"
**Output:** ["a1b2","a1B2","A1b2","A1B2"]
**Example 2:**
**Input:** s = "3z4"
**Output:** ["3z4","3Z4"]
**Constraints:**
* `1 <= s.length <= 12`
* `s` consists of lowercase English letters, uppercase English letters, and digits.