CR-MicroLabs-JavaFundamentals-DanDoBetterDrills/StringUtilities.java

 

/**
 * Created by dan on 6/14/17.
 */
public class StringUtilities {
    /**
     * @return `Hello World` as a string
     */
    public static String getHelloWorld() {
        String word = "Hello World";
            return word;
        
    }

    /**
     * @param firstSegment a string to be added to
     * @param secondSegment a string to add
     * @return the concatenation of two strings, `firstSegment`, and `secondSegment`
     */
    public static String concatenation(String firstSegment, String secondSegment){
       String word = firstSegment + secondSegment;
       return word;
    }

    /**
     * @param firstSegment a string to be added to
     * @param secondSegment a string to add
     * @return the concatenation of an integer, `firstSegment`, and a String, `secondSegment`
     */
    public static String concatenation(int firstSegment, String secondSegment){
        String differentVar = firstSegment + secondSegment;
        return differentVar;
    }

    /**
     * @param input a string to be manipulated
     * @return the first 3 characters of `input`
     */
    public static String getPrefix(String input){
      String newString = new String();
      newString = input.substring(0, 3);
      return newString;
    }

    /**
     * @param input a string to be manipulated
     * @return the last 3 characters of `input`
     */
    public static String getSuffix(String input){
        String newString = new String();
        newString = input.substring(input.length() - 3);
       return newString;
    }

    /**
     * @param inputValue the value to be compared
     * @param comparableValue the value to be compared against
     * @return the equivalence of two strings, `inputValue` and `comparableValue`
     */
    public static Boolean compareTwoStrings(String inputValue, String comparableValue){
        if (inputValue.equals(comparableValue)){
            return true;
        } else {
            } return false;
        }
       
   

    /**
     * @param inputValue the value input from user
     * @return the middle character of `inputValue`
     */
    public static Character getMiddleCharacter(String inputValue){
        int length =  inputValue.length();
        if (length % 2 == 0){
            return inputValue.charAt((length/2) -1);
    }else{
        return inputValue.charAt((length -1)/2);
    }
}

    /**
     * @param spaceDelimitedString a string, representative of a sentence, containing spaces
     * @return the first sequence of characters
     */
    public static String getFirstWord(String spaceDelimitedString){
        String[] dope = spaceDelimitedString.split(" ");
            return dope[0];
        
    }

    /**
     * @param spaceDelimitedString a string delimited by spaces
     * @return the second word of a string delimited by spaces.
     */
    public static String getSecondWord(String spaceDelimitedString){
        String[] yerp = spaceDelimitedString.split(" ",3);
        return yerp[1];
    }

    /**
     * @param stringToReverse
     * @return an identical string with characters in reverse order.
     */
    public static String reverse(String stringToReverse){
       StringBuilder reversedStringNow = new StringBuilder(stringToReverse);
        
        return reversedStringNow.reverse().toString();
       
    }
}