Small factorial NZEC in java

nzec
smallfactorial

#1

Hi Please find below my code. I have run it in java 1.6. The output is absolutely right i cross verified for many digits. but i get nzec runtime error. i even handled exceptions. what is going wrong? please help!

    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.util.ArrayList;
    
    public class Main {
    	// Scanner in = new Scanner(System.in);
    	int T;
    	int carry = 0;
    	ArrayList<Integer> s = new ArrayList<Integer>();
    	BufferedReader bufferRead = new BufferedReader(new InputStreamReader(
    			System.in));
    
    	public static void main(String args[]) {
    
    		
    		try {
    			Main main = new Main();
    			main.T = Integer.valueOf(main.bufferRead.readLine());
    			for (int i = 0; i < main.T; i++) {
    				int j = Integer.valueOf(main.bufferRead.readLine());
    				main.s.add(j);
    			}
    			
    			for (int i = 0; i < main.s.size(); i++) {
    				if (main.s.get(i) > 15) {
    					main.factorial(main.s.get(i));
    				} else {
    					int k = main.factorial2(main.s.get(i));
    					System.out.print(k);
    
    				}
    				if (i != main.s.size() - 1)
    					System.out.println();
    			}
    		} catch (NumberFormatException e) {
    			// TODO Auto-generated catch block
    			return;
    		} catch (Exception e) {
    			// TODO Auto-generated catch block
    			return;
    		}
    
    	}
    
    	public int factorial2(int t) {
    		if (t == 0) {
    			return 1;
    		} else {
    			return t * factorial2(t - 1);
    		}
    	}
    
    	public void factorial(int t) {
    		ArrayList<Integer> p = new ArrayList<Integer>();
    		numberToArray(t, p);
    		for (int i = t - 1; i > 0; i--) {
    			multipy(i, p);
    
    		}
    		for (int c : p) {
    			System.out.print(c);
    		}
    
    	}
    
    	public void numberToArray(int num, ArrayList<Integer> k) {
    		while (num > 0) {
    			k.add(0, num % 10);
    
    			num = num / 10;
    		}
    
    	}
    
    	public void multipy(int i, ArrayList<Integer> a) {
    		carry = 0;
    		for (int j = a.size() - 1; j >= 0; j--) {
    
    			int k = i * a.get(j) + carry;
    			if (k > 9) {
    				a.set(j, k % 10);
    				carry = k / 10;
    
    			} else {
    				a.set(j, k % 10);
    				carry = 0;
    			}
    
    		}
    
    		while (carry != 0) {
    			a.add(0, carry % 10);
    			carry = carry / 10;
    		}
    
    	}
    }

#2

Nzec, as it says.