Java Programs - Solved 2015 ICSE Computer Science Paper

class Pattern1{
    public static void main(String args[]){
        for(int i = 1; i <= 5; i++){
            char ch = '*';
            for(int j = 1; j <= i; j++){
                System.out.print(ch);
                if(ch == '*')
                    ch = '#';
                else
                    ch = '*';
            }
            System.out.println();
        }
    }
} 

class Pattern2{
    public static void main(String args[]){
        for(int i = 1; i <= 5; i++){
            for(int j = 5; j >= i; j--)
                System.out.print(j);
            System.out.println();
        }
    }
}