0

I developed this code to calculate the factorial in java by the dynamic approach. But it's throwing an exception NULLPOINTER, here is my code: 



 public class test {
                   int fact[];int i;
                   int fact(int n) {

               for ( i =2;i<n;i++) {
                 fact[0]=1;
          fact[1]=1;


        fact[i]=fact[i]*fact[1]*fact[0];      

    }return fact[n];
    }
    public static void main(String args[]) {
        int N=5; 
        test t=new test();
        int arr[]=new int[N];

        for(int j=0;j<N;j++) {
            arr[j]= t.fact(j);
        }
        for(int j=0;j<N;j++) {
            System.out.println(arr[j]);
        }
        }
    }

</code></pre>



I am a beginner in java, please can you correct my mistake. Thanks in advance.

        
        

            

                

                    
                    
                    
                    
                    
                    
                    
                

            

        

        
        

            

                

                
                

                    
                    
                        


    
    
        
    
    

        Shrajan Tiwari
        
    
            
  • 23
    • 
            
            
            
  • 6
    • 
        

    




                    
                    
                

            

        

    

    

        
        

            
        

        
    

    

            
        


        

            
            

                

                    

                        
0 Answers0