Problems¶

Question 1¶

Write a function to print all letters in a string except a and b.

Solution

for item in 'abhishekveeramalla':
    if letter == 'a' or letter == 'b':
        continue
    print(item)

Question 2¶

Write a python program to print the below pattern. While it might look silly at the very first place but for a beginer such creative problems are very useful.

* 
* * 
* * * 
* * * * 
* * * * *

Solution

from __future__ import print_function
def pyramid(n):
    # number of rows
    for x in range(n):
        # number of columns
        for y in range(x+1):
            print("* ", end='')

        # new line
        print("\r")


if __name__ == '__main__':
    n = 5
    pyramid(n)

Try by yourself¶

Write a python function to print the below pattern.

Solution

from __future__ import print_function
def pyramid(n):

    num = 1
    # number of rows
    for x in range(n):
        num = 1
        # number of columns
        for y in range(x+1):
            print(num, end=" ")
            # increament
            num = num + 1

        # new line
        print("\r")

# Driver code
n = 5
pyramid(n)

Knowledge Test¶

By now, you have learnt about loops and how they are used in Python. Solve the below problem to access your expertise on loops.

Question 4¶

Print the below patten

1 
2 3 
4 5 6 
7 8 9 10 
11 12 13 14 15

Question 5¶

Read a number n as input from users.

Example: n = 3

The list of non-negative integers that are less than n = 3 is 0, 1, 2. Print the square of each number on a separate line.

Sample Output:

0 
1
4

Question 6¶

Read a number n as input from users.

Example: n = 100

Write a program for the below.

Print Odd numbers and Even numbers between 0 and n
Print ONLY numbers which are divisible by 3 OR divisible by 5. DO NOT print numbers which are divisible by both 3 and 5.