METHOD_0 ( ) { "<AssertPlaceHolder>" ; } METHOD_1 ( java . lang . String ) { java . util . Set < java . lang . IDENT_0 > set = new java . util . HashSet ( ) ; for ( char c : s . METHOD_2 ( ) ) { if ( c == STRING_0 ) continue ; if ( set . contains ( c ) ) set . remove ( c ) ; else set . add ( c ) ; } return ( set . size ( ) ) < 2 ; }
org . junit . Assert . assertTrue ( s . METHOD_1 ( "" ) )