Question

How to check if a string contain only two same repeating characters in Java

Answer 1

public class MyClass {
    static boolean contain_only_two_same_repeating_chars(String s) { 
        int len = s.length();
        if (len % 2 != 0) return false;
        for (int i = 0; i < len - 2; i++) { 
            if (s.charAt(i) != s.charAt(i + 2)) { 
                return false; 
            } 
        } 
        return true; 
    } 
   
    public static void main(String args[]) {
        String s = "ababab"; 
   
        if (contain_only_two_same_repeating_chars(s)) 
            System.out.print( "Yes"); 
        else
            System.out.print("No"); 
        }
}
 
 
 
 
/*
run:
 
Yes
 
*/

 

70+ SQL courses for beginners and professionals