private static final void solve ( String s ) {
  int count = 0 ;
  for ( int i = 1 ;
  i < s . length ( ) ;
  i ++ ) if ( s . charAt ( i ) != s . charAt ( i - 1 ) ) count ++ ;
  System . out . println ( count ) ;
}

private static final void solve ( String s ) { int count = 0 ; for ( int i = 1 ; i < s . length ( ) ; i ++ ) if ( s . charAt ( i ) != s . charAt ( i - 1 ) ) count ++ ; System . out . println ( count ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))) consequence: (expression_statement (update_expression (identifier))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))