syntax input and output (Simple java)

Question

New to JAVA

I have this input and this output/

import java.util.List;

input:public class Solution{ List<Integer> lenght(List<Character> inputList){ body of method}}

expected output: [9,7,8]

My syntax for processing it/

List<Integer> lenghts = new ArrayList();

it says error can't find symbol for the line above. My syntax is wrong (I think it's out dated, from an old tutorial)

Can someone please tell me the correct syntax for the the variable to the input and out put. Thank you.

Do you have any import declarations at the top of your code? — Dawood ibn Kareem
– Dawood ibn Kareem, Commented Aug 4, 2020 at 6:18
I hope that's actually java.util.List - small j for Java, capital L for List. You'll also need java.util.ArrayList. — Dawood ibn Kareem
– Dawood ibn Kareem, Commented Aug 4, 2020 at 6:19
@emotionlessbananas Every time you use a * in an import, a kitten dies. javadude.com/posts/20040522-import-on-demand-is-evil — Dawood ibn Kareem
– Dawood ibn Kareem, Commented Aug 4, 2020 at 6:21

Satish Hawalppagol · Accepted Answer · 2020-08-04 06:26:54Z

1

Simply use this thing List and ArrayList from java.util.*

import java.util.ArrayList;
import java.util.List;

List<Integer> lenght(List<Character> inputList)
{
    List<Integer> li = new ArrayList<Integer>();
    return li; 
}

answered Aug 4, 2020 at 6:26

Satish Hawalppagol

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3 Comments

Ibrahim Kadhum Over a year ago

Do I have to import these two libraries? It only gave me (.List) in the question.

Satish Hawalppagol Over a year ago

java.util.* or java.util.ArrayList java.util.List both are one and the same the only differenece is that if you import java.util.* all collection which are present under this library you can call without any extra import or error

Ibrahim Kadhum Over a year ago

Got it Thank you!

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