JAVA: How to remove duplicate values in a print array?

Vote count:

1

I have two methods, one method responsible for taking user input values (just numbers), for example:

The user inputs:

Enter a number: 76 
Enter a number: 45 
Enter a number: 45 
Enter a number: 34 
Enter a number: 32 
Enter a number: 32 
Enter a number: 32 
Enter a number: 6 
Enter a number: 7 
Enter a number: 8 
... etc 

I then have another method with an array in it to display the output of what was just entered.

You entered: 76, 45, 45, 34, 32, 32, 32, 6, 7 ,8... etc 

I want just each number to be shown once, example:

You entered: 76, 45, 34, 32, 6, 7 ,8... etc 

How do I do this?

asked 52 secs ago

user3693615

11

2 Answers

Vote count:

0

Use a Set. Those will only contain unique values.

answered 22 secs ago

Martijn Courteaux

33k

Vote count:

0

Convert the array you have into a set which will get rid of duplicates and print.

E.g.

Integer[] values = {1, 2, 3, 3, 3, 4, 5, 5, 5}; 

Set<Integer> valueSet = new HashSet<Integer>(Arrays.asList(values)); 

for(int value : valueSet) { 
System.out.println(value); 
} 

Hope it helps.

answered 10 secs ago

Evenure

190