static int findRepeatFirstN2 ( String s ) {
  int p = - 1 , i , j ;
  for ( i = 0 ;
  i < s . length ( ) ;
  i ++ ) {
    for ( j = i + 1 ;
    j < s . length ( ) ;
    j ++ ) {
      if ( s . charAt ( i ) == s . charAt ( j ) ) {
        p = i ;
        break ;
      }
    }
    if ( p != - 1 ) break ;
  }
  return p ;
}

static int findRepeatFirstN2 ( String s ) { int p = - 1 , i , j ; for ( i = 0 ; i < s . length ( ) ; i ++ ) { for ( j = i + 1 ; j < s . length ( ) ; j ++ ) { if ( s . charAt ( i ) == s . charAt ( j ) ) { p = i ; break ; } } if ( p != - 1 ) break ; } return p ; }
(method_declaration (modifiers) type: (integral_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: (unary_expression operand: (decimal_integer_literal))) declarator: (variable_declarator name: (identifier)) declarator: (variable_declarator name: (identifier))) (for_statement init: (assignment_expression left: (identifier) right: (decimal_integer_literal)) condition: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (for_statement init: (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (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 (identifier))))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (break_statement))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (unary_expression operand: (decimal_integer_literal)))) consequence: (break_statement)))) (return_statement (identifier))))