Pfthb

I am a beginner in java and im having a bit of trouble looping through some variables;
I wanted to loop through the four variables and see if there were any repeated variables, then saving the non repeated in a second array or make a count, for example.

ValueA = "fred"
ValueB = "apple"
ValueC = "fred"
ValueD = "water"

Output count = 3 or array="fred","apple","water"

 String arr = new String[4];

 arr[0]= valueA;
 arr[1]= valueB;
 arr[2]= valueC;
 arr[3]= valueD;

There are a lot of ways in doing this,

• 
  

  You can store the variables in a Set and get back an Array.

  
  
  

   String withoutDuplicates = new HashSet<>(Arrays.asList(array)).toArray(new String);
  

  
  



• Loop through first array -> have another empty list -> check before inserting into the second empty list. (You can try this since you are beginner, List already has contains() for you)



• 
  

  You can use Stream.filter().distinct() from Java 8

  
  
  

  Arrays.stream(array).distinct().toArray(String::new);
  

  
  

I personally prefer the third one! :)

This should work:

 String otherArr = new String[4];
 int counter = 0;
 for(int i = 0; i< arr.size(); i++)
 for(int j = i+1; j< arr.size(); j++)
 if( arr[i].equals(arr[j]))
 //two similar variables
 otherArr[counter++] = arr[i];
 
 
 

If you have more questions I can send you some decent guides.