Question - Reverse an array in specified group size. e.g. Array - 1,2,3,4,5,6,7,8,9 and grpSize -3 then output 3,2,1,6,5,4,9,8,7

Question - Given Two strings, return true if they are one edit away from each other else return false. An edit is insert/replace/delete a character. Ex. {"abc","ab"}->true, {abc","adc"}->true, {"abc","cab"}->false