Main.java:22: error: cannot find symbol
               maxLength = Math.max(maxLength, end - start + 1);
                                                     ^
  symbol:   variable start
  location: class Main
Main.java:23: error: cannot find symbol
               start = i;
               ^
  symbol:   variable start
  location: class Main
Main.java:26: error: cannot find symbol
       return Math.max(maxLength, end - start + 1);
                                        ^
  symbol:   variable start
  location: class Main
3 errors