Question

How to find the first character that is repeated in a string with Java

Answer 1

public class MyClass {
    static int get_first_character_repeated(String s) { 
        int len = s.length();
          
        for (int i = 0; i < len; i++) { 
            for (int j = i + 1; j < len; j++) { 
                if (s.charAt(i) == s.charAt(j)) { 
                    return i;
                } 
            } 
        } 
        return -1; 
    }   
    public static void main(String args[]) {
        String s = "abcdxypcbop"; 
        
        int i = get_first_character_repeated(s); 
       
        if (i == -1) 
            System.out.println("Not found"); 
        else
            System.out.println(s.charAt(i)); 
    }
}



/*
run:

b

*/

 

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