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Python Programming Practice Problems

Conditional Statements & Loops:

  1. Write a program to find the sum of numbers in given string?

Sample input:

sentence = "Python Programming training on 05 dec 2020 to 26 dec 2020"

Sample output:

Sum of numbers in a given string is 21
  1. Write a program to find factorial of given input number from the user?
  • Sample input1:
number = 5

Sample output1:

Factorial of 5 is 120
  • Sample input2:
number = 4

Sample output2:

Factorial of 4 is 24
  1. Write a program to find the lucky number from given mobile numer lucky number means reduce the sum of digits to single digit(0 between 9)

Sample input:

mobile = "9848022338"

Sample output:

Lucky number is 2
 
#explanation: 9+8+4+0+2+2+3+3+8 = 47 -> 11 ->  2 (lucky number 2)
  1. Write a program to find the sum of squares of even numbers in given string

Sample input:

string = '123@psw456'

Sample output:

Sum of the squares of the even numbers in the string is 56
  1. Write a program to find how many number of unique characters in given name

Sample input1:

input = python

Sample output1:

Unique characters in the string is 6

Sample input2:

input = pythonprogramming

Sample output2:

Unique characters in the string is 11
  1. Check the string is Palindrome or not

Sample input1:

121

Sample output1:

Given String 121 is Palindrome

Sample input2:

ababa

Sample output2:

Given String ababa is Palindrome
  1. Write a program to swap the 2 characters in a string Sample input:
Python

Sample output:

yphtno
  1. Write a Python program to get a string made of the first 2 and the last 2 chars from a given string. If the string length is less than 2, return instead of the empty string.

Sample input1:

'python'

Sample output1:

'pyon'

Sample input2:

'py'

Sample output2:

'pypy'

Sample input3:

'p'

Sample output3:

'p'
  1. Write a Python program to change a given string to a new string where the first and last chars have been exchanged. Sample input:
Python

Sample output:

nythop
  1. Check the given number is Armstrong number or not Method 1: Sample input:
Input: 153 or 1634

Sample output:

Armstrong Number of 1634 is 1634
# Explanination: 1^3+5^3+3^3 = 153 or 1^4+6^4+3^4+4^4 = 1634

Method 2 Sample input:

No of digits - 3
n = 153

Sample output:

Armstrong Number of 153 is 153
# Explanination 1^3+5^3+3^3 = 153