Assignment
Assignment #: 7
Topic : Functions
Level 1: Easy
1. Write a function check_even_odd that takes a number as input and
checks whether it is even or odd.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 5 6
Output Odd Even
Code:
def check_even_odd(num):
if num % 2 == 0:
return "even"
else:
return "odd"
num = int(input("enter number : "))
print(check_even_odd(num))
Output:
2. Write a function find_max that takes three numbers as input and returns
the maximum of the three.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 3, 7, 5 10, 2, 10
Output 7 10
Code:
def find_max(num1,num2,num3):
if num1 > num2 and num3:
return num1
elif num2 > num1 and num3:
return num2
else:
return num3
num1 = int(input("enter num1 : "))
num2 = int(input("enter num2 : "))
num3 = int(input("enter num3 : "))
print(find_max(num1,num2,num3))
Output:
3. Write a function calculate_area that takes the radius of a circle as input and
returns the area. Use π = 3.14.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 5 10
Output 78.5 314.0
Code:
def radius_of_circle(r):
return 3.14 * r * r
r = int(input("enter r : "))
print(radius_of_circle(r))
Output:
4. Write a function celsius_to_fahrenheit that takes a temperature in Celsius
and converts it to Fahrenheit.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 0 100
Output 32.0 212.0
Code:
def celcius_to_farenheit(celcius):
return (9/5)*celcius + 32
celcius = int(input("enter celcius : "))
print(celcius_to_farenheit(celcius))
Output:
5. Write a function is_leap_year that takes a year as input and checks if it is a
leap year.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 2020 2021
Output Leap Year Not a Leap Year
Code:
def is_leap_year(year):
if year % 4 == 0:
if year % 100 == 0:
if year % 400 == 0:
return "leap year"
else:
return "not a leap year"
else:
return "leap year"
else:
return "not a leap year"
year = int(input("enter year : "))
print(is_leap_year(year))
Output:
6. Write a function factorial that takes a number as input and returns its factorial.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 5 3
Output 120 6
Code:
def factorial(num):
for i in range(1,num):
num = num * i
return num
num = int(input("enter number : "))
print(factorial(num))
Output:
7. Write a function is_palindrome that takes a string as input and checks if it is
a palindrome.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input "radar" "hello"
Output Palindrome Not a Palindrome
Code:
def is_palindrome(str):
if str == str[::-1]:
return "palindrome"
else:
return "not a palindrome"
str = (input("enter word : "))
str.lower()
print(is_palindrome(str))
Output:
8. Write a function sum_of_digits that takes a number as input and returns
the sum of its digits.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 123 456
Output 6 15
Code:
def sum_of_digits(number):
if number < 0:
number = -number
sum_digits = 0
while number > 0:
digit = number % 10
sum_digits += digit
number = number // 10
return sum_digits
number = int(input("Enter a number: "))
print(sum_of_digits(number))
Output:
9. Write a function string_length that takes a string as input and returns its length.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input "hello" "openai"
Output 5 6
Code:
def string_length(str):
return len(str)
str = input("enter word :")
print(string_length(str))
Output:
10. Write a function is_prime that takes a number as input and checks if it
is prime.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 11 12
Output Prime Not Prime
Code:
def is_prime(number):
if number <= 1:
return "not prime"
if number <= 3:
return "prime"
if number % 2 == 0 or number % 3 == 0:
return "not prime"
i = 5
while i * i <= number:
if number % i == 0 or number % (i + 2) == 0:
return "not prime"
i += 6
return "prime"
number = int(input("Enter a number: "))
print(is_prime(number))
Output:
11. Write a function count_vowels that takes a string as input and returns
the number of vowels in the string.
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input "hello" "beautiful"
Output 2 5
Code:
def count_vowels(str):
vowels = "aeiouAEIOU"
count = 0
for char in str:
if char in vowels:
count += 1
return count
str = input("Enter a string: ")
print(count_vowels(str))
Output:
12. Write a function find_gcd that takes two numbers as input and returns
their greatest common divisor (GCD).
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 12, 15 18, 24
Output 3 6
Code:
def find_gcd(a, b):
while b:
a, b = b, a % b
return a
num1 = int(input("Enter the first number: "))
num2 = int(input("Enter the second number: "))
print(find_gcd(num1, num2))
Output:
13. Concatenation of Array
Problem Statement: Given an integer array nums of length n, you want to create
an array ans of length 2n where ans[i] == nums[i] and ans[i + n] == nums[i] for
0 <= i < n (0-indexed).
Specifically, ans is the concatenation of two nums arrays.
Return the array ans.
Constraints
n == nums.length
1 <= n <= 1000
1 <= nums[i] <= 1000
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 12, 15 18, 24
Output 3 6
14. Shuffle the Array
Problem Statement: Given the array nums consisting of 2n elements in the
form [x1,x2,...,xn,y1,y2,...,yn].
Return the array in the form [x1,y1,x2,y2,...,xn,yn]
Constraints
1 <= n <= 500
nums.length == 2n
1 <= nums[i] <= 10^3
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input 12, 15 18, 24
Output 3 6
15. Running Sum of 1d Array
Problem Statement: Given an array nums. We define a running sum of an array as
runningSum[i] = sum(nums[0]…nums[i]).
Return the running sum of nums.
Constraints
1 <= nums.length <= 1000
-10^6 <= nums[i] <= 10^6
Sample test Cases:
Test Cases Test Case1: Test Case 2:
Input [1,2,3,4] [1,1,1,1,1]
Output [1,3,6,10] [1,2,3,4,5]
Level 2: Medium
1. A communication system converts data into binary number format for
transmission purpose. User enters data in numeric form. Write a method to
convert decimal number into binary numbers & print it.
Sample test Cases:
Test Cases Test Case1:
Input 25
Output 11001
Code:
def decimal_to_binary_builtin(n):
return bin(n).replace("0b", "")
number = int(input("Enter a decimal number: "))
print(decimal_to_binary_builtin(number))
Output
2. Write a function to find whether the blood donor is eligible or not for donating
blood. The rules laid down are as follows. a. Age should be above 18 years but not
more than 55 years. b. Weight should be more than 45kg.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input 20, 50 60, 70
Output Eligible Not Eligible
Code:
def is_eligible_to_donate(age, weight):
if age > 18 and age <= 55 and weight > 45:
return "Eligible"
return "Not Eligible"
age = int(input("Enter age : "))
weight = float(input("Enter weight : "))
print(is_eligible_to_donate(age,weight))
Output:
3. You are developing a scientific calculator app that requires implementing a
feature to calculate the power of a number. Write a function power that takes two
numbers, base and exponent, as input and returns the result of base raised to the
power of exponent.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input base = 2, exponent = 3 base = 5, exponent = 0
Output 8 0
4. You are developing a statistics module that needs a function to find the
maximum and minimum values in a list of numbers.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input numbers = [3, 5, 7, 2, 8] numbers = [10, 20, 5, 15, 25]
Output max = 8, min = 2 max = 25, min = 5
Code:
def find_max_and_min(numbers):
numbers.sort()
return numbers[0],numbers[-1]
n = int(input("enter size : "))
numbers = []
for i in range(0,n):
numbers.insert(i,int(input("enter elemets")))
print(find_max_and_min(numbers))
Output:
5. You are developing a bank account management system where customers can
perform transactions. Write a function calculate_balance that takes an initial
balance and a list of transactions (positive for deposits and negative for
withdrawals) and returns the final balance.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input initial_balance = 1000, initial_balance = 500,
transactions = [200, -100, 300, - transactions = [-100, -50, 200]
50]
Output 1350 550
Code:
def calculate_balance(initial_balance, transactions):
final_balance = initial_balance
for i in transactions:
final_balance += i
return final_balance
initial_balance = int(input("Enter the initial balance: "))
transactions = []
for i in range(0,4):
transactions.insert(i,int(input("enter tramsaction : ")))
final_balance = calculate_balance(initial_balance, transactions)
print(final_balance)
Output:
6. You are building an online shopping cart system. Write a function
calculate_total that takes a list of item prices and a discount percentage, then
returns the total price after applying the discount.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input item_prices = [100, 200, 300], item_prices = [50, 75, 100],
discount_percentage = 10 discount_percentage = 5
Output 540 213.75
Code:
def calculate_total(item_prices, discount_percentage):
total_price = sum(item_prices)
discount_amount = total_price * (discount_percentage / 100)
total_price_after_discount = total_price - discount_amount
return total_price_after_discount
item_prices = []
for i in range(0,3):
item_prices.insert(i,int(input("enter price : ")))
discount_percentage = int(input("ebter discount : "))
print(calculate_total(item_prices, discount_percentage))
Output:
7. You are developing an employee performance evaluation system. Write a
function evaluate_performance that takes the number of projects completed and
the number of hours worked, and returns a performance rating (Excellent, Good,
Average, Poor).
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input projects_completed = 10, projects_completed = 5,
hours_worked = 150 hours_worked = 200
Output Excellent Average
Code:
def evaluate_performance(projects_completed, hours_worked):
perfomance = projects_completed / hours_worked
if perfomance >= 2:
return "Excellent"
elif perfomance >= 1.5:
return "Good"
elif perfomance >= 1:
return "Average"
else:
return "Poor"
projects = int(input("Enter number of projects completed: "))
hours = int(input("Enter number of hours worked: "))
print(evaluate_performance(projects, hours))
Output:
8. You are developing a travel expense calculator for business trips. Write a
function calculate_expenses that takes the number of days of the trip, daily
allowance, and other expenses, and returns the total expense.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input days = 5, daily_allowance = 50, days = 3, daily_allowance = 75,
other_expenses = 100 other_expenses = 150
Output 350 375
Code:
def expence_calculator(days,daily_allowance,other_expenses):
return days*daily_allowance+other_expenses
days = int(input("enter no of days : "))
daily_allowance = int(input("enter daily allowance : "))
other_expenses = int(input("enter other expenses : "))
print(expence_calculator(days,daily_allowance,other_expenses))
Output:
9. You are developing a weather data analysis tool. Write a function
calculate_average_temperature that takes a list of daily temperatures and returns
the average temperature for the week.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input temperatures = [30, 32, 31, 29, temperatures = [25, 27, 26, 24,
28, 30, 33] 23, 25, 28]
Output 30.43 25.43
Code:
def calculate_average_temperature(daily_temperatures):
total_temperature = sum(daily_temperatures)
average_temperature = total_temperature / 7
return average_temperature
temperatures = []
for i in range(0,7):
temperatures.insert(i,int(input("enter temperature : ")))
print(calculate_average_temperature(temperatures))
Output:
10. You are developing an online quiz grading system. Write a function grade_quiz
that takes a list of student scores (out of 20) and returns the average score and
the corresponding grade (Pass or Fail, where passing score is 12 or higher).
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input scores = [15, 18, 12, 10, 17] scores = [8, 11, 10, 13, 9]
Output average = 14.4, grade = Pass average = 10.2, grade = Fail
Code:
def grade_quiz(student_scores):
total_score = sum(student_scores)
average_score = total_score / 5
if average_score >= 12:
grade = "Pass"
else:
grade = "Fail"
return average_score, grade
scores = []
for i in range(0,5):
scores.insert(i,int(input("marks : ")))
print(grade_quiz(scores))
output:
11. Sign of Product of an array
Problem statement: There is a function signFunc(x) that returns:
· 1 if x is positive.
· -1 if x is negative.
· 0 if x is equal to 0.
You are given an integer array nums. Let product be the product of all values in the
array nums.
Return signFunc(product).
Constraints:
1 <= nums.length <= 1000
-100 <= nums[i] <= 100
Sample test Cases:
Test Cases Test Case1: Test Case2: Test Case3:
Input nums = [-1,-2,-3,- nums = [1,5,0,2,-3] nums = [-1,1,-1,1,-1]
4,3,2,1]
Output 1 0 -1
12. Smallest Index With Equal Value
Problem statement : Given a 0-indexed integer array nums, return the
smallest index i of nums such that i mod 10 == nums[i], or -1 if such index does
not exist. x mod y denotes the remainder when x is divided by y.
Constraints:
1 <= nums.length <= 1000
-100 <= nums[i] <= 100
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input nums = [0,1,2] nums = [4,3,2,1]
Output 0 2
Explanation: Explanation:
i=0: 0 mod 10 = 0 == nums[0]. i=0: 0 mod 10 = 0 != nums[0].
i=1: 1 mod 10 = 1 == nums[1]. i=1: 1 mod 10 = 1 != nums[1].
i=2: 2 mod 10 = 2 == nums[2]. i=2: 2 mod 10 = 2 == nums[2].
All indices have i mod 10 == i=3: 3 mod 10 = 3 != nums[3].
nums[i], so we return the smallest 2 is the only index which has i mod
index 0. 10 == nums[i].
Level 3: Hard
1. XYZ Technologies is in the process of increment the salary of the employees.
This increment is done based on their salary and their performance appraisal
rating.
If the appraisal rating is between 1 and 4, the increment is 10% of the salary.
If the appraisal rating is between 4.1 and 7, the increment is 25% of the
salary.
If the appraisal rating is between 7.1 and 10, the increment is 30% of the salary.
Help them to do this, by writing a program that displays the incremented salary.
(Use separate function to calculate the increment)
Note: If either the salary is 0 or negative (or) if the appraisal rating is not in the
range 1 to 10 (inclusive), then the output should be “Invalid Input”.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input Enter the salary 80000 Enter the salary 75000
Enter the appraisal rating 3 Enter the Performance appraisal
rating 4.3
Output 88000 93750
Code:
def salary_increament(salary,appraisal_rating):
if appraisal_rating >=1 and appraisal_rating <=4:
return salary*0.1+salary
elif 4.1 <= appraisal_rating and appraisal_rating >= 7:
return salary*0.25+salary
elif 7.1 <= appraisal_rating and appraisal_rating >= 10:
return salary*0.3+salary
salary = int(input("enter input : "))
appraisal_rating = int(input("enter rating : "))
print(salary_increament(salary,appraisal_rating))
Output:
2. XYZ college wants to recognize the department which has succeeded in getting
the maximum number of placements for this academic year. The departments
that have participated in the recruitment drive are CS, EC, ME. Help the college to
find the department getting maximum placements. Check for all the possible
output given in the sample snapshot.
Note: If any input is negative, the output should be "Input is invalid". If all
departments have equal number of placements, the output should be "None of
the department has got the highest placement". (Use separate function to check
the maximum placements)
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input Enter the no of students placed in Enter the no of students placed in
CS:90 CS:55
Enter the no of students placed in Enter the no of students placed in
EC:45 EC:85
Enter the no of students placed in Enter the no of students placed in
ME:70 ME:85
Output Highest placement CS Highest placement EC ME
Code:
def find_max_placements(department_placements):
max_department = None
max_placements = -1
for department, placements in department_placements.items():
if placements > max_placements:
max_placements = placements
max_department = department
return max_department, max_placements
placements = {}
departments = ['CS', 'EC', 'ME']
for department in departments:
placements[department] = int(input(f"Enter the number of placements for
{department}: "))
print(find_max_placements(placements))
Output:
3. Write a function word_break(s, word_dict) to determine if a string can be
segmented into a space-separated sequence of one or more dictionary words.
Problem Description: Given a string s and a dictionary of strings word_dict, return
True if s can be segmented into a space-separated sequence of one or more
dictionary words, otherwise return False.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input ("leetcode", ["leet", "code"]) ("applepenapple", ["apple",
"pen"])
Output True True
4. Write a function longest_palindromic_substring(s) to find the longest
palindromic substring in a given string.
Problem Description: Given a string s, return the longest palindromic substring in s.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input "babad" "cbbd"
Output "bab" or "aba" "bb"
5. Write a function number_to_words(num) to convert a non-negative integer to its
English words representation.
Problem Description: Convert a non-negative integer num to its English words
representation.
Sample test Cases:
Test Cases Test Case1: Test Case2:
Input 123 12345
Output "One Hundred Twenty Three" "Twelve Thousand Three Hundred
Forty Five"
