import java.util.Scanner;

/**
Some more examples for String processing.
*/
public class StringSearching
{
  /** String Searching methods */
   public static void main(String[] args)
   {
      String doc="Four score and seven years ago"; 
      // use a loop to find all locations of the letter 'r'
      int loc = doc.indexOf('r');
      while (loc!=-1) {
             System.out.println("r was found at location: " + loc);
             loc = doc.indexOf('r', loc+1);
      }
      // search for a pattern in a text
      String text = "I am searching for a needle in a haystack.";
      String pattern = "in";
      loc = text.indexOf(pattern);
      while (loc!=-1) {
             System.out.println(pattern + " occurs at location " + loc);
             loc = text.indexOf(pattern, loc+1);
      }
      // Problem: You have a string with a last name then ',' comma
             // first name. You want to extract the initials into
             // character variables, firstInit and lastInit
      String fullName="Doe,John";
      char firstInit, lastInit;
      lastInit = fullName.charAt(0); 
      firstInit=fullName.charAt(fullName.indexOf(',')+1);
      System.out.println("Your initials are: " + firstInit + lastInit);
   }
}

/** LAB ASSIGNMENT: 
  * Write a method that accepts 2 String object as parameters.
  * The first is a pattern to search for, the second is a text to 
  * search.
  * The method returns the number of times the pattern occurs 
  * in the text.
  */