ZCW-Arrays-StringArrayUtilities-BlueJ/StringArrayUtils.java

 

/**
 * Created by leon on 1/29/18.
 */
public class StringArrayUtils {
    /**
     * @param array array of String objects
     * @return first element of specified array
     */ // TODO
    public static String getFirstElement(String[] array) {
        return array[0];
    }

    /**
     * @param array array of String objects
     * @return second element in specified array
     */
    public static String getSecondElement(String[] array) {
        return array[1];
    }

    /**
     * @param array array of String objects
     * @return last element in specified array
     */ // TODO
    public static String getLastElement(String[] array) {
        //String[] array = {"brown", "fox", "jumps", "over", "the", "lazy", "dog"};
            String word = "";
        for(int i = 0; i < array.length -1; i++){
                
            return word = array[array.length-1];
        }
        return word;
    }

    /**
     * @param array array of String objects
     * @return second to last element in specified array
     */ // TODO
    public static String getSecondToLastElement(String[] array) {
          String word = "";
        for(int i = 0; i < array.length -2; i++){
                
            return word = array[array.length-2];
        }
        return word;
    }

    /**
     * @param array array of String objects
     * @param value value to check array for
     * @return true if the array contains the specified `value`
     */ // TODO
    public static boolean contains(String[] array, String value) {
        boolean hold = false;
        for(String s:array){
            if(s.equals(value)){
            return hold = true;
            }
        }
        
        return hold;
    }
    /**
     * @param array of String objects
     * @return an array with identical contents in reverse order
     */ // TODO
    public static String[] reverse(String[] array) {
       String[] tempStringArray = new String[array.length];
       System.arraycopy( array, 0, tempStringArray, 0, array.length );
       for(int i = 0 ;i<tempStringArray.length/2;i++){
           String temparray = tempStringArray[i];
           tempStringArray[i] = tempStringArray[tempStringArray.length -1 - i];
           tempStringArray[tempStringArray.length - 1 - i] = temparray;
       }
       return tempStringArray;

   }

    /**
     * @param array array of String objects
     * @return true if the order of the array is the same backwards and forwards
     */ // TODO
    public static boolean isPalindromic(String[] array) {
        /*
         * I'm trying to reverse the order of the array
         * than compare if array is equals to array
         */
        boolean returnPal = false;
        String [] reverseArray = reverse(array);
        /*
         * 
         */
        for(int i = 0; i < array.length; i++){
            System.out.println("array[i] " + array[i] + " reverseArray[i] " + reverseArray[i]);
            if(array[i].equals(reverseArray[i])){
                returnPal = true;
            }
        }
        
        return returnPal;
    }
    /**
     * @param array array of String objects
     * @return true if each letter in the alphabet has been used in the array
     */ // TODO
    public static boolean isPangramic(String[] array) {
        /*int letters = 26;
         * if(isPangramic.length() < letters){
         *  }
         */
        int letters = 26;
        boolean pangram = false;
        
        if(array.length < letters){
            pangram = true;
        }
        if(array.length == letters){
            pangram = false;
        }else{
        
            pangram = true;
            
        }
        
        return pangram;
    }

    /**
     * @param array array of String objects
     * @param value value to check array for
     * @return number of occurrences the specified `value` has occurred
     */ // TODO
    public static int getNumberOfOccurrences(String[] array, String value) {
        /*
         * 
         */
        int count = 0;
        return 0;
    }

    /**
     * @param array         array of String objects
     * @param valueToRemove value to remove from array
     * @return array with identical contents excluding values of `value`
     */ // TODO
    public static String[] removeValue(String[] array, String valueToRemove) {
        return null;
    }

    /**
     * @param array array of chars
     * @return array of Strings with consecutive duplicates removes
     */ // TODO
    public static String[] removeConsecutiveDuplicates(String[] array) {
        return null;
    }

    /**
     * @param array array of chars
     * @return array of Strings with each consecutive duplicate occurrence concatenated as a single string in an array of Strings
     */ // TODO
    public static String[] packConsecutiveDuplicates(String[] array) {
        return null;
    }


}