ZCW-Arrays-StringArrayUtilities-BlueJ/StringArrayUtils.java

 import java.util.*;
 import java.util.ArrayList;

/**
 * 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) {
        return array[array.length - 1];
    }

    /**
     * @param array array of String objects
     * @return second to last element in specified array
     */ // TODO
    public static String getSecondToLastElement(String[] array) {
        return array[array.length - 2];
    }

    /**
     * @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) {
        return Arrays.asList(array).contains(value);
    }

    /**
     * @param array of String objects
     * @return an array with identical contents in reverse order
     */ // TODO
    public static String[] reverse(String[] array) {
        
        for (int i = 0; i < array.length/2; i++){
            String temp = array[i];
            array[i] = array[(array.length -1) - i];
            array[(array.length -1) - i] = temp;  
        }
        
        return array;
        
    }

    /**
     * @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) {
        boolean isPalindromic = true;
        for(int i = 0; i < array.length/2 ; i++){
            if(array[i] != array[( array.length - 1 ) - i]){
                isPalindromic = false;
                break;
            };
        }
        return isPalindromic;
    }

    /**
     * @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) {
        char[] alphabet = new char[26];
       
        for(String str: array){
            char[] chars = str.toCharArray();
            
            
        }
        return false;
    }
    
    private void isLetter(){
        
    }
    
    private void isInCharArray(char[] chars, char Char){
    
    }
    

    /**
     * @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 counter = 0;
        for(String str: array){
            if(str.equals(value)) {
                counter++;
            }
        }
        return counter;
    }

    /**
     * @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) {
        //ArrayList<String> strings = new ArrayList<String>(Arrays.asList(array));
        
        //for(int i = 0; i < string.size()
        
        
        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;
    }


}