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In a given string, all the characters are the same except for one of them. Return that one character that is different from the rest. The string will contain at least 3 characters. single("aaaba") → "b" single("wxx") → "w" single("ggggG") → "G" Go...Save, Compile, Run (ctrl-enter) char single(String str) { } Go Editor font size %:75100125150 Shorter output

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Difficulty: 200

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