week06

Week 6

Question 1 (Teaching Codes PS7)

Write a program which takes an integer as input and computes the sum of the factorial of each digit. For example, assume that the user enters "572" as the input. For each digit of the integer, you will compute the factorial. Then you will compute the sum of these factorials: 5! + 7! + 2! = 120 + 5040 + 2 = 5162.

Input	Output
572	5162
27	5042

Break

Continue

What about the sum of the factorial of only odd digits?

Question 2

a. Write a program which takes an integer as input and prints whether the number is prime or not.

Input	Output
7	prime
8	not prime

b. Write a program which takes an integer as input and prints prime numbers up to that integer.

Input	Output
11	2 3 5 7
15	2 3 5 7 11 13

Question 3

a. Write a program which takes two positive integers as N and M then prints a rectangle with size NxM.

Input	Output
3 4	**** **** ****
2 6	****** ******

b. Write a program which takes two positive integers as N and M then prints a rectangle with size NxM which has stars (*) at borders, and lines (-) inside.

Input	Output
3 3	*** *-* ***
4 5	***** *---* *---* *****

Question 4

a. Write a program to display a right angle triangle with N number of rows, like below.

Input	Output
3	1 12 123
5	1 12 123 1234 12345

Hint

At each row, we iterate from 1 to the row number.

b. Write a program which takes two integer as N and x and display a right angle triangle with N number of rows formed by powers of x as follows:

Input	Output
3 4	4 4 16 4 16 64
4 3	3 3 9 3 9 27 3 8 27 81

Hint

At each row, we take power of input integer from once to the row number times.

Question 5

Write a program which takes an integer as input and prints an upper triangle of letters as follows:

Input	Output
5	A B C D E B C D E C D E D E E
3	A B C B C C

Question 6 (Requested in the Lab Session)

Write a program which takes an integer as input and prints the following pattern:

Input	Output
5	*    **   ***  **** *****
3	*  ** ***