917. Reverse Only Letters

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Given a string s, reverse the string according to the following rules: - All the characters that are not English letters remain in the same position. - All the English letters (lowercase or uppercase) should be reversed. Return s after reversing it. Example 1: Input: s = "ab-cd" Output: "dc-ba" Example 2: Input: s = "a-bC-dEf-ghIj" Output: "j-Ih-gfE-dCba" Example 3: Input: s = "Test1ng-

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solution.cppC++17

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