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this method accepts a String object as a parameter. It returns true if the String has all unique characters, false otherwise. For...
X586: isUniqueString
this method accepts a String object as a parameter. It returns true if the String has all unique characters, false otherwise. For example, if the String is "coding", the method returns true; if the String is "Lambda", the method returns false. The method should return true if the the length of the String is less than 1.
Examples:
isUniqueString("coding") -> true
isUniqueString("Lambda") -> false
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