QuizWeek1/LoopFun.java

public class LoopFun
{

      /**
       * Given a number, return the factorial of that number.
       * For example, given 5, the factorial is 5 x 4 x 3 x 2 x 1 which should return 120.
       * @param number
       * @return the factorial of the number
       */
      public int factorial(int number){
          int total = 0;
          for(int i = 1; i < number; i++ ){
              
            total = i * number; 
        
            }
            return total;
      }

      /**
       * Given a phrase, get the acronym of that phrase. Acronym is the combination of
       * the first character of each word in upper case.
       * For example, given "Ruby on Rails", this method will return "ROR"
       * @param phrase
       * @return Upper case string of the first letter of each word
       */
      public String acronym(String phrase) {
         /* String x1="";
          String [] container = phrase.split(" ");
          for(int i= 0; i < container.length ; i++)
            {   
                
                x1 = container.charAt(0,1);
                
                
            }
          String letters = x1;
          return letters.toUpperCase();*/
          
         //String result = phrase.replaceAll("\\B |\\P{L}","").toUpperCase();
         //return result;
          
          String [] container = phrase.split(" ");
          
          String a_c = "";
          for(int i= 0; i < container.length ; i++)
            {   
                
                 a_c +=Character.toString(container[i].charAt(0));
                
                
            }
          
          
         
         return a_c;
         
        }
      

      /**
       * To prevent anyone from reading our messages, we can encrypt it so it will only be readable by its
       * intended audience. This method encrypt the message by shifting the letter by 3 characters. If the character is
       * at the end of the alphabet, it will wraps around.
       * For example:
       *  'a' => 'd'
       *  'w' => 'z'
       *  'x' => 'a'
       *  'y' => 'b'
       * @param word
       * @return the encrypted string by shifting each character by three character
       */
      public String encrypt(String word) {
          
        //  char alph = (((alph - 'a' + 3) % 26) + 'a');
        
          
        return null;
        }
}