MY Program works on bluej but not on hackerrank's online compiler- runtime ERROR NZEC

Question

Question :

Given two weights of a and b units, in how many different ways you can achieve a weight of d units using only the given weights? Any of the given weights can be used any number of times (including 0 number of times).

Example: 7 can only be achieved by using 2 two times and 3 one time. INPUT 2 3 7 (as a,b,d SEPERATED BY SPACES) OUTPUT:1

My program works fine on bluej but not in hackerearth online compiler. it says Runtime ERROR NZEC my code didn't print anything. Heres my program:

import java.io.*;

public class WAYS    
{    
    public static int process(String s)    
    {    
        s=s+" ";    
        int l=s.length();

        String s1="";    
        int n[]=new int[3];    
        int j=0;    

        for(int i=0;i<l;i++)    
        {
            char c=s.charAt(i);
            if(c==' ')
            {
                n[j]=Integer.parseInt(s1);
                j++;
                s1="";
            }
            else
            {
                s1=s1+c;
            }
        }
        int a=n[0];
        int b=n[1];
        int d=n[2];
        int q=0;
        for(int i=0;i<=d;i++)
        {
            int f=a*i;              

            for(int k=0;k<=d;k++)
            {
                int f1=b*k;

                if(f+f1==d)
                {
                    q++;
                }
            }
        }
        return q;
    }

    public static void main()throws IOException
    {
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter the Number of Test Cases");
        int T=Integer.parseInt(br.readLine());
        String s[]=new String[T];
        int a[]=new int[T];
        for(int i=0;i<T;i++)
        {
            System.out.print("("+(i+1)+")");
            s[i]=br.readLine();
            a[i]=process(s[i]);
        }
        System.out.println();
        for(int i=0;i<T;i++)
        {
            System.out.println(a[i]);
        }
    }
}

Can u tell where am i wrong??

What error do you get while compiling with hackerrank? – Naman Dec 10 '16 at 12:44 — Naman, Dec 10 '16 at 12:44
It say something as Runtime Error - NZEC, – Dipanjan Ghosal Dec 10 '16 at 12:57 — Dipanjan Ghosal, Dec 10 '16 at 12:57

score 0 · Answer 1 · answered Dec 10 '16 at 12:48

0

Your error is most likely because you are creating too many in memory variables. You must create variables outside the for loop and manipulate it inside the loop.

EG : char c=s.charAt(i); , int f=a*i; and int f1=b*k;

answered Dec 10 '16 at 12:48

StackFlowed

6,664
1
29
45

It say something as Runtime Error - NZEC, – Dipanjan Ghosal Dec 10 '16 at 12:55
@DipanjanGhosal You are defiantly doing something wrong with your memory I just pointed out a few that i could see up front. Please double check you code. Read https://www.quora.com/What-are-the-various-reasons-that-can-cause-NZEC-error-on-online-coding-platforms – StackFlowed Dec 10 '16 at 12:57
Also can you post your new code so I can take a look at what you have done. – StackFlowed Dec 10 '16 at 13:00
i just initialized the variables outside for loop and used them in the loops – Dipanjan Ghosal Dec 10 '16 at 13:06
Initializing local variables inside a loop is perfectly ok. That's not what causes the problem. – Klitos Kyriacou Dec 12 '16 at 14:15

score 0 · Answer 2 · edited May 23 '17 at 12:01

It's probably because the statement -

n[j]=Integer.parseInt(s1); // since s1 here is ""

could be leading to a NumberFormatException in your code.

Thrown to indicate that the application has attempted to convert a string to one of the numeric types, but that the string does not have the appropriate format.

Smallest piece of code to reproduce that is --

public static void main(String[] args) {
        String str = "";
        int n = Integer.parseInt(str);
}

And although I am not sure about the algorithm you are following, would suggest assigning some numeric value as string to s1 if that conversion is a must. Also, do read - How to resolve java.lang.NumberFormatException: For input string: "N/A"?

@Dipanjan Ghosal wouldn't you want to try something yourself? — Naman, Dec 10 '16 at 13:03

score 0 · Answer 3 · answered Dec 11 '16 at 06:51

0

Finally fixed the problem. WHEN USING JAVA, ALWAYS USE 'String args[]' and' throws Exception' in main method. Example: public static void main(String args[])throws Exception{} to avoid this silly NZEC error. If that's not working, make return type of your main method to 'int' and return 0 before closing your main method. Also check for infinite loops.

answered Dec 11 '16 at 06:51

Dipanjan Ghosal

21
3

Just make your main method `public static void main(String[] args)`. Anything else is *not* a main method! For example, if it doesn't take a String array parameter, then it is not going to be called as a main method, but will be considered just an ordinary method. – Klitos Kyriacou Dec 12 '16 at 14:28

MY Program works on bluej but not on hackerrank's online compiler- runtime ERROR NZEC

3 Answers3