static int FindMinNum ( int arr [ ] , int n ) {
  int pre [ ] = new int [ n ] ;
  pre [ 0 ] = arr [ 0 ] ;
  for ( int i = 1 ;
  i < n ;
  i ++ ) pre [ i ] = pre [ i - 1 ] + arr [ i ] ;
  int k = Integer . MAX_VALUE ;
  for ( int i = 0 ;
  i < n - 1 ;
  i ++ ) {
    int rightSum = pre [ n - 1 ] - pre [ i ] ;
    if ( rightSum >= pre [ i ] ) k = Math . min ( k , rightSum - pre [ i ] ) ;
  }
  if ( k != Integer . MAX_VALUE ) return k ;
  return - 1 ;
}

static int FindMinNum ( int arr [ ] , int n ) { int pre [ ] = new int [ n ] ; pre [ 0 ] = arr [ 0 ] ; for ( int i = 1 ; i < n ; i ++ ) pre [ i ] = pre [ i - 1 ] + arr [ i ] ; int k = Integer . MAX_VALUE ; for ( int i = 0 ; i < n - 1 ; i ++ ) { int rightSum = pre [ n - 1 ] - pre [ i ] ; if ( rightSum >= pre [ i ] ) k = Math . min ( k , rightSum - pre [ i ] ) ; } if ( k != Integer . MAX_VALUE ) return k ; 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 (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (array_access array: (identifier) index: (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: (identifier)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (array_access array: (identifier) index: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (identifier) field: (identifier)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (array_access array: (identifier) index: (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))) consequence: (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (field_access object: (identifier) field: (identifier)))) consequence: (return_statement (identifier))) (return_statement (unary_expression operand: (decimal_integer_literal)))))