public static int indexOfFirstOne ( int arr [ ] , int n ) {
  for ( int i = 0 ;
  i < n ;
  i ++ ) if ( arr [ i ] == 1 ) return i ;
  return - 1 ;
}

public static int indexOfFirstOne ( int arr [ ] , int n ) { for ( int i = 0 ; i < n ; i ++ ) if ( arr [ i ] == 1 ) return i ; return - 1 ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))) consequence: (return_statement (identifier)))) (return_statement (unary_expression operand: (decimal_integer_literal)))))