Split into substrings

    public static List<String> splitSubString(String name){

 if (!(name.length() % 2 ==0)){
        name  = name + "_";
    }

    List<String> items = new ArrayList<>();


    for (int i = 0; i < name.length() ; i = i+ 2) {

       items.add( name.substring(i,i+2));

    }

    return items;
     }

Swap Numbers

   public static void swapNumbers(int one, int two){

     one = one + two;
    two = one - two;
    one = one - two;

    System.out.println("One is " + one + "Two is " +two);
    }

Even or Odd number

    public static boolean evenOrOdd(int number){

    Boolean value = false;

    if(number % 2 == 0){
        value = true;
    }

    else {
        value = false;
    }
    return value;


    }

Count the vowels

    public static int countVowels(String name){

     int count = 0;
     List<Character> values =  new ArrayList<>();
    for (int i = 0; i < name.length(); i++) {
        values.add(name.charAt(i));

    }
    List<Character> items =  new ArrayList<>();
    for (char eachChar : values) {
        if (eachChar=='a' || eachChar=='e' ||eachChar=='i'||eachChar=='o'||eachChar=='u'){
            items.add(eachChar);
        }
    }
    count = items.size();
     return count;
    }

Anagram Strings

     public static boolean anogram(String one, String two){

     Boolean value =  false;

    String updatedOne = one.toLowerCase().replaceAll("\\s","");
    String updatedTwo = two.toLowerCase().replaceAll("\\s","");

    char[] arrayOne = updatedOne.toCharArray();
    char[] arrayTwo = updatedTwo.toCharArray();

    Arrays.sort(arrayTwo);
    Arrays.sort(arrayOne);

    if (arrayOne.length == arrayTwo.length){
        value =true;
    }

    if (arrayOne == arrayTwo){
        value = true;
    }

    return value;

    }

Largest number of an Array

   public static int largestNumber(int[] numbers){

     int largestNumber = 0;

    Arrays.sort(numbers);
    largestNumber = numbers[numbers.length-1];

    return largestNumber;
    }

Reverse a number

    public static int reverseNumber(int number)

    int reversedNumber = 0;

    String numberValue = String.valueOf(number);

    String reverseString = "";

    for (int i = numberValue.length()-1; i >=0 ; i--) {
        reverseString = reverseString + numberValue.charAt(i);

    }

    reversedNumber = Integer.parseInt(reverseString);

    return reversedNumber;
    }