static final long [ ] fal_rnd ( long [ ] ar , LongSupplier sp ) {
  int l = - 1 , r = ar . length ;
  while ( l + 1 != r ) ar [ Math . random ( ) < 0.5 ? ++ l : -- r ] = sp . getAsLong ( ) ;
  return ar ;
}

static final long [ ] fal_rnd ( long [ ] ar , LongSupplier sp ) { int l = - 1 , r = ar . length ; while ( l + 1 != r ) ar [ Math . random ( ) < 0.5 ? ++ l : -- r ] = sp . getAsLong ( ) ; return ar ; }
(method_declaration (modifiers) type: (array_type element: (integral_type) dimensions: (dimensions)) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (integral_type) dimensions: (dimensions)) name: (identifier)) (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) value: (field_access object: (identifier) field: (identifier)))) (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (identifier))) body: (expression_statement (assignment_expression left: (array_access array: (identifier) index: (ternary_expression condition: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_floating_point_literal)) consequence: (update_expression (identifier)) alternative: (update_expression (identifier)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) (return_statement (identifier))))