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![Javarevisited: How to check if a String has all unique characters in Java? [Solved]](https://blogger.googleusercontent.com/img/a/AVvXsEhsSPkn-clJ3OW--Tk9hRxBkjlT3RjSYLRKOXQB-6Gpk_-h7ylGfpnWRvZcIh_NKb4Mu3M8As_iQtdystpSjGgwD-Uz57Xsg6Ir-YeBrMVZj_w7bHcmv2RkrLQ9RLJTQbEgIAhPgEotKF0_5vFVVM5LNd8K9PcTvs1OG5ZsWZLmLW6ShULfSkNP-ZEd=w1200-h630-p-k-no-nu "Javarevisited: How to check if a String has all unique characters in Java? [Solved]")
Javarevisited: How to check if a String has all unique characters in Java? [Solved]
SOLVED: The method containsLetter(string s, char c) checks whether or not the string s includes c. (Don't use similar methods in Java library). The ruleChecker method gets an input of string type
