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 [] t = new String [array.length]; 
        for(int i = 0 ;i<array.length;i++){
            t[i] = "";
            for(int j = array[i].length()-1; j>= 0;j--){
                t[i] +=array[i].substring(j,j+1);
            }
        }
    
        return t;
    }

    /**
     * @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) {
        String length = array.length;
        
        for(int i = 0;i<length;i++){
            String start = array[0];
            String end = array[length];
        }
        
        return false;
    }

    /**
     * @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) {
        return false;
    }

    /**
     * @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) {
        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;
    }


}