question: return the number of days in the given month . concode_field_sep int MILLIS_PER_SECOND concode_elem_sep int JULIAN_1_CE concode_elem_sep int[] DAYS_BEFORE concode_elem_sep int MILLIS_PER_HOUR concode_elem_sep long MIN_MILLIS concode_elem_sep int[] MONTH_LENGTH concode_elem_sep long MAX_MILLIS concode_elem_sep int MILLIS_PER_DAY concode_elem_sep int JULIAN_1970_CE concode_elem_sep int MILLIS_PER_MINUTE concode_field_sep int[] dayToFields concode_elem_sep int dayOfWeek concode_elem_sep int[] timeToFields concode_elem_sep int getDayOfWeekInMonth concode_elem_sep long fieldsToDay concode_elem_sep int previousMonthLength concode_elem_sep boolean isLeapYear concode_elem_sep long floorDivide concode_elem_sep long floorDivide
target: int function ( int arg0 , int arg1 ) { return MONTH_LENGTH [ arg1 + ( isLeapYear ( arg0 ) ? 12 : 0 ) ] ; }