Java: Count occurrence of the entered numbers?

[trapizi]

Hi guys, I'm new to Java and I'm just wondering if it is possible to count occurrence of integers without using array?

[Mr_KoKa]

You need one variable for one number to count, so if there would be input of 3 3 3 7 7 8 1 you would need 4 variables to count each number. 

When you say array, do you mean that you would need array that looks like [1, 0, 3, 0, 0, 0, 2, 1] to store your counters?

I would use associative array so it would look like {3 => 3, 7 => 2, 8 => 1, 1 => 1} so there is no unused space.

[79wjd]

What exactly are you trying to count? Do you have a text file with a bunch of numbers and you want to know how many matches there are to the number entered? 

 

Or do you want to see how many times every number that a user enters was entered by the user? 

 

Or....something else

[Nineshadow]

Without an array?

But...why?

[fizzlesticks]

22 minutes ago, Nineshadow said:

Without an array?

But...why?

Without some kind of limit on the numbers you can't really use an array anyway. A dictionary / counter / map / whatever Java has would be the way to go.