public static void main ( String [ ] args ) {
  Scanner infile = new Scanner ( System . in ) ;
  int T = infile . nextInt ( ) ;
  while ( T -- > 0 ) {
    int N = infile . nextInt ( ) ;
    int [ ] freq = new int [ N + 1 ] ;
    while ( N -- > 0 ) {
      freq [ infile . nextInt ( ) ] ++ ;
    }
    int res = 0 ;
    for ( int x : freq ) res = Math . max ( res , x ) ;
    System . out . println ( res ) ;
  }
}

public static void main ( String [ ] args ) { Scanner infile = new Scanner ( System . in ) ; int T = infile . nextInt ( ) ; while ( T -- > 0 ) { int N = infile . nextInt ( ) ; int [ ] freq = new int [ N + 1 ] ; while ( N -- > 0 ) { freq [ infile . nextInt ( ) ] ++ ; } int res = 0 ; for ( int x : freq ) res = Math . max ( res , x ) ; System . out . println ( res ) ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (type_identifier) arguments: (argument_list (field_access object: (identifier) field: (identifier)))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (while_statement condition: (parenthesized_expression (binary_expression left: (update_expression (identifier)) right: (decimal_integer_literal))) body: (block (expression_statement (update_expression (array_access array: (identifier) index: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (enhanced_for_statement type: (integral_type) name: (identifier) value: (identifier) body: (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (identifier)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (identifier))))))))