Zoho Deluge - Get English Ordinal

What?
This is a very quick note with the code to determine the English ordinal of a date (eg. "st" of "1st"). So in a date, instead of "Tuesday, 6 November 2018", I could want "Tuesday 6th of November 2018".

Why?
Well there's a long a way to do it (but reliable). But being limited to the lines of code you can run (ref. "Maximum number of executable statements", anything that reduces the number of lines used would be an improvement. This is how I was doing it previously.
	// get the date (eg. 1, 2, 3, ... 29, 30, 31)
	This_Day_Date = My_Date_Field.toString("d");

	// determine English ordinal
	English_Ordinal = "th ";
	if(This_Day_Date == "1" || This_Day_Date == "21" || This_Day_Date == "31")
	{
		English_Ordinal = "st ";
	}
	if(This_Day_Date == "2" || This_Day_Date == "22")
	{
		English_Ordinal = "nd ";
	}
	if(This_Day_Date == "3" || This_Day_Date == "23")
	{
		English_Ordinal = "rd ";
	}

	// display
	info My_Date.toString("d") + English_Ordinal;


How?
I'm exploring various methods, so here's a couple using the built-in functions of Zoho deluge.
Method #1:
Using a list/array, I'm going to check the date against the 3 exceptions to this rule (11th, 12th and 13th of each month):
	// get the date (eg. 1, 2, 3, ... 29, 30, 31)
	This_Day_Date = My_Date_Field.toString("d");

	// determine English Ordinal
	Ordinals = "th,st,nd,rd".toList();
	English_Ordinal = Ordinals.get(0);
	EO_Index = This_Day_Date.substring(This_Day_Date.length() - 1).toLong();
	if((EO_Index == 1 || EO_Index == 2 || EO_Index == 3) && (This_Day_Date != "11" && This_Day_Date != "12" && This_Day_Date != "13"))
	{
		English_Ordinal = Ordinals.get(EO_Index);
	}


Method #2:
Using a map, set default to "th", check if the date (string) is in the map, if so use mapped value:
	// determine English Ordinal
	English_Ordinal = "th";
	Ordinal_Map = {"1":"st","2":"nd","3":"rd","21":"st","22":"nd","23":"rd","31":"st"};
	if(Ordinal_Map.containkey(My_Date_Field.toString("d")))
	{
		English_Ordinal = Ordinal_Map.get(My_Date_Field.toString("d"));
	}


Method #3:
Given the current date and using the last character of the date, we can do the following:
	v_EnglishOrdinal = "th ";
	v_ThisDayDateLastChar = zoho.currentdate.toString("d").right(1).toLong();
	v_EnglishOrdinal = if(v_ThisDayDateLastChar == 1 && zoho.currentdate.toString("d")!=11,"st",v_EnglishOrdinal);
	v_EnglishOrdinal = if(v_ThisDayDateLastChar == 2 && zoho.currentdate.toString("d")!=12,"nd",v_EnglishOrdinal);
	v_EnglishOrdinal = if(v_ThisDayDateLastChar == 3 && zoho.currentdate.toString("d")!=13,"rd",v_EnglishOrdinal);


Method #4:
Combining method 2 & 3, we can reduce getting the ordinal to 2 lines plus the output:
	// Type Here
	v_NextRenewalDate = '2018-11-06';
	v_ThisDayDate = v_NextRenewalDate.toString("d").toLong();
	v_ThisDayDateLastChar = v_NextRenewalDate.toString("d").right(1).toLong();
	v_EnglishOrdinal = if(v_ThisDayDateLastChar<4 && (v_ThisDayDate < 4 || v_ThisDayDate > 20),"st,nd,rd".toList().get(v_ThisDayDateLastChar-1),"th");

	// full formal date
	v_ContractDateFormatted = v_NextRenewalDate.toString("EEEE, d") + v_EnglishOrdinal + " of " + v_NextRenewalDate.toString("MMMM, yyyy");
	info v_ContractDateFormatted;	
	// yields Tuesday, 6th of November, 2018


Method #5:
if a list contains:
	// Type Here
	v_NextRenewalDate = '2018-11-06';
	v_EnglishOrdinal = if("123".contains(v_NextRenewalDate.toString("d").right(1)) && !"11,12,13".contains(v_NextRenewalDate.toString("d")),"0,st,nd,rd".get(v_NextRenewalDate.toString("d").right(1)),"th");

	// full formal date
	v_ContractDateFormatted = v_NextRenewalDate.toString("EEEE, d") + v_EnglishOrdinal + " of " + v_NextRenewalDate.toString("MMMM, yyyy");
	info v_ContractDateFormatted;	
	// yields Tuesday, 6th of November, 2018

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