static int reachTarget ( int target ) {
  target = Math . abs ( target ) ;
  int sum = 0 , step = 0 ;
  while ( sum < target || ( sum - target ) % 2 != 0 ) {
    step ++ ;
    sum += step ;
  }
  return step ;
}

static int reachTarget ( int target ) { target = Math . abs ( target ) ; int sum = 0 , step = 0 ; while ( sum < target || ( sum - target ) % 2 != 0 ) { step ++ ; sum += step ; } return step ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (binary_expression left: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (decimal_integer_literal)) right: (decimal_integer_literal)))) body: (block (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (identifier) right: (identifier))))) (return_statement (identifier))))