Help me to solve this assignments...

Question

1. Write a program to print a triangle multiplication table as shown below:
0
0 2
0 3 6
0 4 8 12
0 5 10 15 20
0 6 12 18 24 30
0 7 14 21 28 35 42
2.Write a Java program that will display the factorial of the number 10.
3.Write a Java Program to display a four by four identity matrix
4.Write a program to calculate the sum of the odd integers between 1 and 99 using for loop.
kindly help me to solve this assignment.

Answer 1

Am I correct in all???
class Assignment
     public static void main(String args[])
          //This is to print the numbers in triangle
          for(int i = 1; i < 8; i++)
               for(int j = 0; j < i; j++)
                    System.out.print(" " + i*j);
               System.out.println("");
          //print value for 10 factorial
          int factorialvalue=1;
          int f=6;
          for(int l=f;l>1;l--)
               factorialvalue*=l;
          System.out.println("F values is "+factorialvalue);
          //4 x 4 Matrix
          for(int s=0;s<4;s++)
               for(int m=0;m<4;m++)
                    System.out.print("("+s+","+m+") ");
               System.out.println("");
          //sum of odd numbers up to 99
          int h=0;
          for (int b=1;b<10;b+=2)
               h+=b;
          System.out.println("Sum is "+h);
selva.