class UserMainCode { public static int stringHarmony(String input) { int n = input.length(); int maxLength = 0; for (int i = 0; i < n - 1; i++) { if (input.charAt(i) == 'a' && input.charAt(i + 1) == 'b') { int length = 2; // Starting with "ab" char nextChar = 'c'; int pos = i + 2; while (pos < n && input.charAt(pos) == nextChar) { length++; pos++; nextChar++; } maxLength = Math.max(maxLength, length); } } return maxLength; } } // harmony code