QuizWeek1/StringUtilities.java

public class StringUtilities {
    
    
   public Character getMiddleCharacter(String word){
        char[] character = word.toCharArray();
        int len = (character.length) / 2;
        
        if(character.length % 2 == 0)
        {
            return character[len];
        } else {
            return character[len];
        }
   }
   
   public String removeCharacter(String value, char charToRemove){
       //store input at the time this is called
       String n = value;
       //convert the to be removed char to a string
       String charString = String.valueOf(charToRemove);
       //replace the char with an empty string - removing it from the string
       //if there is nothing to remove, this function will return the original string
       n = searchReplaceFirst(n , charString, "");
       //if n is now still the same as the starting value, this means nothing could be replaced
       if(n.equals(value)){
          //return n since all occurences have been removed
          return n;
       //if n is now different from value, after the char has been replaced, recall this method.
       }else{
          //convert the string back to a character
          char remove = charString.charAt(0);
          //recursivly call this function on the updated string
          return removeCharacter(n, remove); 
       }
   }
   
   public static String searchReplaceFirst(String value, String replace, String replacement){
       //if the two values are the same after something has been replaced, this means nothing has been replaced
       if(value.equals(value.replaceFirst(replace, replacement)))
       {
           //so return the original string
           return value;
       //otherwise, this means something has been replaced
       } else {
          //return the new value
          return value.replaceFirst(replace, replacement);
       }
   }
   
   public String getLastWord(String value) {
       String[] result = value.split(" ");
       return result[result.length - 1];
   }
}