static void leftSmaller ( int arr [ ] , int n , int SE [ ] ) {
  Stack < Integer > S = new Stack < > ( ) ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    while ( ! S . empty ( ) && S . peek ( ) >= arr [ i ] ) {
      S . pop ( ) ;
    }
    if ( ! S . empty ( ) ) {
      SE [ i ] = S . peek ( ) ;
    }
    else {
      SE [ i ] = 0 ;
    }
    S . push ( arr [ i ] ) ;
  }
}

static void leftSmaller ( int arr [ ] , int n , int SE [ ] ) { Stack < Integer > S = new Stack < > ( ) ; for ( int i = 0 ; i < n ; i ++ ) { while ( ! S . empty ( ) && S . peek ( ) >= arr [ i ] ) { S . pop ( ) ; } if ( ! S . empty ( ) ) { SE [ i ] = S . peek ( ) ; } else { SE [ i ] = 0 ; } S . push ( arr [ i ] ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions))) body: (block (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments)) arguments: (argument_list)))) (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: (block (while_statement condition: (parenthesized_expression (binary_expression left: (unary_expression operand: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (array_access array: (identifier) index: (identifier))))) body: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) (if_statement condition: (parenthesized_expression (unary_expression operand: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) consequence: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))) alternative: (block (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))))))))