How could I have my output separated in a line by exactly one comma?

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I have a output in form "1 1 1 2 2 " but I wanted to print the numbers separated in a line by exactly one comma

What I have tried:

<pre lang="java"><pre>public class Main {

    static int a = 0;
    static int b = 0;

    public static void main(String[] args) {
        
        int n = Integer.parseInt(args[0]);
        a = Integer.parseInt(args[1]);
        b = Integer.parseInt(args[2]);
        for (int i = 0; i <= n; i++){
            System.out.print(recursiv(i));}

    }

    public static long recursiv(int n) {

        if (n >= 0 && n <= 2)
            return 1;

        else
            return a * recursiv(n - 2) + b * recursiv(n - 3);

    }

}

Posted 16-May-18 6:54am

Member 13817762

Updated 16-May-18 9:00am

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2 solutions

Solution 2

As you have a String[] as the input, why don't you just use String.join for the output?

Java

public static void main(String[] args) {
            System.out.print(String.join(",", args);
}

Posted 16-May-18 9:01am

MadMyche

Updated 16-May-18 9:03am

v2

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Patrice T · Accepted Answer · 2018-05-16T09:01:00

Solution 1

Get started with:

Java

for (int i = 0; i <= n; i++){
    System.out.print(recursiv(i));
    System.out.print(",");
}

I let you handle the last number.

Posted 16-May-18 9:01am

Patrice T

Comments

Member 13817762 16-May-18 15:18pm

thank you very much , I have solved it with for- loop .
for (int i = 0; i <= n; i++){
System.out.print(recursiv(i));
if(i<n){
System.out.print(",");}
}

Patrice T 16-May-18 15:49pm

Nice to see it