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- 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 fact = 1;
- for(int i = 1; i <= number; i++) {
- fact *= i;
- }
- return fact;
- }
-
- /**
- * 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 acro = "";
- String[] newPhrase = phrase.split(" ");
- for (int i = 0; i < newPhrase.length; i++) {
- acro += newPhrase[i].substring(0,1);
- }
-
- return acro.toUpperCase();
- }
-
- /**
- * 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) {
- //String newWord = "";
- //String[] letters = word.split("");
- //for (int i = 0; i <letters.length; i++) {
- // newWord += letters[i]
-
- //}
- return null;
- }
- }
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