Package g0701_0800.s0784_letter_case_permutation

Class Solution

java.lang.Object
g0701_0800.s0784_letter_case_permutation.Solution
public class Solution extends Object
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.

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • letterCasePermutation

      public List<String> letterCasePermutation(String s)

    • helper

      public void helper(String s, int curr, String temp)