// Yazzy Latif
// 07/17/2020
// CSE142
// TA: Grace Hopper

// Contains a few short methods displaying the String traversal pattern and a variety of different
//    String methods and types of String manipulation. 

public class StringTraversals {
   public static void main(String[] args) {
      doubleLetters("banana");
      doubleLetters("double"); 
      doubleLetters("supercalifragilisticexpialidocious");
      
      spongeBobify("dank memes in computer science");
      spongeBobify("mod is my favorite operator");
       
      spellOut("RESPECT"); // find out what it means to me
      spellOut("mississippi");
   }
   
   // Prints the given String with every character appearing twice
   // String phrase: the phrase to be "doubled"
   public static void doubleLetters(String phrase) {
      // hello -> hheelloo
      
      // String traversal
      String result = ""; 
      for (int i = 0; i < phrase.length(); i++) {
         result = result + phrase.charAt(i) + phrase.charAt(i);
      }
      
      System.out.println(result);
   }
   
   // Prints the given String with every other letter uppercased or lowercased
   // String phrase: the phrase to be printed with modified casing
   public static void spongeBobify(String phrase) {
      // hello -> hElLo
      String result = ""; 
      for (int i = 0; i < phrase.length(); i++) {
         // result = result + phrase.charAt(i) + phrase.charAt(i);
         if (i % 2 == 1) {
            // upper case state
            result = result + phrase.toUpperCase().charAt(i);
         } else {
            // lower case state
            result = result + phrase.toLowerCase().charAt(i);
         }
      }
      
      System.out.println(result);
   }
   
   // Prints the given String spelled out (with a dash in between each letter)
   // String phrase: the phrase to be spelled out
   public static void spellOut(String phrase) {
      // hello --> h-e-l-l-o
      
      // Version pulling out the first post
      System.out.print(phrase.charAt(0));
      for (int i = 1; i < phrase.length(); i++) {
         System.out.print("-" + phrase.charAt(i));
      }
      System.out.println();
   }
   
   // Prints the given String spelled out (with a dash in between each letter)
   // String phrase: the phrase to be spelled out
   public static void spellOut2(String phrase) {
      // hello --> h-e-l-l-o
      
      // Version pulling out the last post
      for (int i = 0; i < phrase.length() - 1; i++) {
         System.out.print(phrase.charAt(i) + "-");
      }
      System.out.println(phrase.charAt(phrase.length() - 1));
   }
}