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/*
  String indexOf() and lastIndexOf() functions
  Examples of how to evaluate, look for, and replace characters in a String
  created 27 Jul 2010
  modified 2 Apr 2012
  by Tom Igoe
  This example code is in the public domain.
  https://www.arduino.cc/en/Tutorial/BuiltInExamples/StringIndexOf
*/

void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  // send an intro:
  Serial.println("\n\nString indexOf() and lastIndexOf()  functions:");
  Serial.println();
}

void loop() {
  // indexOf() returns the position (i.e. index) of a particular character in a
  // String. For example, if you were parsing HTML tags, you could use it:
  String stringOne = "<HTML><HEAD><BODY>";
  int firstClosingBracket = stringOne.indexOf('>');
  Serial.println("The index of > in the string " + stringOne + " is " + firstClosingBracket);

  stringOne = "<HTML><HEAD><BODY>";
  int secondOpeningBracket = firstClosingBracket + 1;
  int secondClosingBracket = stringOne.indexOf('>', secondOpeningBracket);
  Serial.println("The index of  the second > in the string " + stringOne + " is " + secondClosingBracket);

  // you can also use indexOf() to search for Strings:
  stringOne = "<HTML><HEAD><BODY>";
  int bodyTag = stringOne.indexOf("<BODY>");
  Serial.println("The index of the body tag in the string " + stringOne + " is " + bodyTag);

  stringOne = "<UL><LI>item<LI>item<LI>item</UL>";
  int firstListItem = stringOne.indexOf("<LI>");
  int secondListItem = stringOne.indexOf("<LI>", firstListItem + 1);
  Serial.println("The index of the second list tag in the string " + stringOne + " is " + secondListItem);

  // lastIndexOf() gives you the last occurrence of a character or string:
  int lastOpeningBracket = stringOne.lastIndexOf('<');
  Serial.println("The index of the last < in the string " + stringOne + " is " + lastOpeningBracket);

  int lastListItem  = stringOne.lastIndexOf("<LI>");
  Serial.println("The index of the last list tag in the string " + stringOne + " is " + lastListItem);


  // lastIndexOf() can also search for a string:
  stringOne = "<p>Lorem ipsum dolor sit amet</p><p>Ipsem</p><p>Quod</p>";
  int lastParagraph = stringOne.lastIndexOf("<p");
  int secondLastGraf = stringOne.lastIndexOf("<p", lastParagraph - 1);
  Serial.println("The index of the second to last paragraph tag " + stringOne + " is " + secondLastGraf);

  // do nothing while true:
  while (true);
}

	/*
	String indexOf() and lastIndexOf() functions

	Examples of how to evaluate, look for, and replace characters in a String

	created 27 Jul 2010
	modified 2 Apr 2012
	by Tom Igoe

	This example code is in the public domain.

	https://www.arduino.cc/en/Tutorial/BuiltInExamples/StringIndexOf
	*/

	void setup() {
	// Open serial communications and wait for port to open:
	Serial.begin(9600);
	while (!Serial) {
	; // wait for serial port to connect. Needed for native USB port only
	}

	// send an intro:
	Serial.println("\n\nString indexOf() and lastIndexOf() functions:");
	Serial.println();
	}

	void loop() {
	// indexOf() returns the position (i.e. index) of a particular character in a
	// String. For example, if you were parsing HTML tags, you could use it:
	String stringOne = "<HTML><HEAD><BODY>";
	int firstClosingBracket = stringOne.indexOf('>');
	Serial.println("The index of > in the string " + stringOne + " is " + firstClosingBracket);

	stringOne = "<HTML><HEAD><BODY>";
	int secondOpeningBracket = firstClosingBracket + 1;
	int secondClosingBracket = stringOne.indexOf('>', secondOpeningBracket);
	Serial.println("The index of the second > in the string " + stringOne + " is " + secondClosingBracket);

	// you can also use indexOf() to search for Strings:
	stringOne = "<HTML><HEAD><BODY>";
	int bodyTag = stringOne.indexOf("<BODY>");
	Serial.println("The index of the body tag in the string " + stringOne + " is " + bodyTag);

	stringOne = "<UL><LI>item<LI>item<LI>item</UL>";
	int firstListItem = stringOne.indexOf("<LI>");
	int secondListItem = stringOne.indexOf("<LI>", firstListItem + 1);
	Serial.println("The index of the second list tag in the string " + stringOne + " is " + secondListItem);

	// lastIndexOf() gives you the last occurrence of a character or string:
	int lastOpeningBracket = stringOne.lastIndexOf('<');
	Serial.println("The index of the last < in the string " + stringOne + " is " + lastOpeningBracket);

	int lastListItem = stringOne.lastIndexOf("<LI>");
	Serial.println("The index of the last list tag in the string " + stringOne + " is " + lastListItem);


	// lastIndexOf() can also search for a string:
	stringOne = "<p>Lorem ipsum dolor sit amet</p><p>Ipsem</p><p>Quod</p>";
	int lastParagraph = stringOne.lastIndexOf("<p");
	int secondLastGraf = stringOne.lastIndexOf("<p", lastParagraph - 1);
	Serial.println("The index of the second to last paragraph tag " + stringOne + " is " + secondLastGraf);

	// do nothing while true:
	while (true);
	}