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Given a string, return the first missing character e.g. "ac" --> "b". We assume the str has only lowercase characters with the length of greater than 0,. Return "" if there is no missing character. whatMissing("ac") → "b" whatMissing("ab") → "" whatMissing("abcdeg") → "f" ...Save, Compile, Run (ctrl-enter) |
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Difficulty: 200
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