static void subString ( String s ) {
  HashMap < String , Integer > map = new HashMap < > ( ) ;
  for ( int i = 0 ;
  i < s . length ( ) ;
  i ++ ) {
    for ( int j = i ;
    j < s . length ( ) ;
    j ++ ) {
      char [ ] valC = s . substring ( i , j + 1 ) . toCharArray ( ) ;
      Arrays . sort ( valC ) ;
      String val = new String ( valC ) ;
      if ( map . containsKey ( val ) ) map . put ( val , map . get ( val ) + 1 ) ;
      else map . put ( val , 1 ) ;
    }
  }
  int anagramPairCount = 0 ;
  for ( String key : map . keySet ( ) ) {
    int n = map . get ( key ) ;
    anagramPairCount += ( n * ( n - 1 ) ) / 2 ;
  }
  System . out . println ( anagramPairCount ) ;
}

static void subString ( String s ) { HashMap < String , Integer > map = new HashMap < > ( ) ; for ( int i = 0 ; i < s . length ( ) ; i ++ ) { for ( int j = i ; j < s . length ( ) ; j ++ ) { char [ ] valC = s . substring ( i , j + 1 ) . toCharArray ( ) ; Arrays . sort ( valC ) ; String val = new String ( valC ) ; if ( map . containsKey ( val ) ) map . put ( val , map . get ( val ) + 1 ) ; else map . put ( val , 1 ) ; } } int anagramPairCount = 0 ; for ( String key : map . keySet ( ) ) { int n = map . get ( key ) ; anagramPairCount += ( n * ( n - 1 ) ) / 2 ; } System . out . println ( anagramPairCount ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier) (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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (identifier))) condition: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)))) name: (identifier) arguments: (argument_list)))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (identifier))))) (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) consequence: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (decimal_integer_literal))))) alternative: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (decimal_integer_literal))))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (enhanced_for_statement type: (type_identifier) name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))))) right: (decimal_integer_literal)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))