class InvertTriangle
{
    public static void main(String args[])
    {
        int num = Integer.parseInt(args[0]);
        while(num > 0)
        {
            for(int j=1; j<=num; j++)
            {
                System.out.print(" "+num+" ");
            }
            System.out.print("\n");
            num--;
        }
    }
}

 OUTPUT:

javac InvertTriangle.java
 
java InvertTriangle 5
 
 5  5  5  5  5
 4  4  4  4
 3  3  3
 2  2
 1

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