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Author: ShadmanSakibRahman

Concept 2 – Functions/Problem 01.py

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+def div_frac(numerator, denominator):
+    """
+    Given two numbers as input, this function divide one
+    number by another and returns the the fraction part of
+    the result.
+
+    Exception: if the denominator is 0 then it returns 0.
+    """
+    if denominator == 0:
+        return 0
+    else:
+        result = (numerator / denominator) - (numerator // denominator)
+        if result == 0.0:
+            return 0
+        else:
+            return result
+
+
+print(div_frac(5, 2))
+print(div_frac(5, 0))
+print(div_frac(0, 5))
+
+# print(div_frac.__doc__)   # Access Docstring

Concept 2 – Functions/Problem 02.py

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+def BMI_Calc(height, weight):
+    """
+    Given height and weight as input, this function
+    calculate the BMI of a person with the following
+    formula:
+            BMI = Kg / 𝑚^2
+    Then it returns the BMI and the following comment
+    based on BMI score:
+            * < 18.5 - Underweight
+            * 18.5 - 24.9 - Normal
+            * 25 - 30 - Overweight
+            * > 30 - Obese
+    """
+    height = height / 100  # Converting cm to meter
+    BMI = weight / height ** 2
+
+    if BMI < 18.5:
+        comment = "Underweight"
+    elif BMI >= 18.5 and BMI <= 24.9:
+        comment = "Normal"
+    elif BMI >= 25 and BMI <= 30:
+        comment = "Overweight"
+    elif BMI > 30:
+        comment = "Obese"
+
+    return f"Score is {BMI:.1f}. You are {comment}"
+
+
+print(BMI_Calc(175, 96))
+print(BMI_Calc(152, 48))
+
+# height = int(input())
+# weight = int(input())
+# print(BMI_Calc(height, weight))
+
+# print(BMI_Calc.__doc__)   # Access Docstring

Concept 2 – Functions/Problem 03.py

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+def div_sum(min, max, div):
+    """
+    This function takes 3 number maximum, minimum and divisor
+    as input. Then it finds all the number divisible by the
+    divisor between minimum and maximum value. Then it returns
+    the sum of these number.
+    """
+    if div != 0:
+
+        # Without using sum()
+        # Sum = 0
+        # for num in range(min, max):
+        #    if num % div == 0:
+        #        Sum += num
+        # return Sum
+
+        return sum(num for num in range(min, max) if num % div == 0)
+
+    else:
+        return "Divisor cannot be 0."
+
+
+print(div_sum(0, 10, 2))
+print(div_sum(3, 16, 3))
+print(div_sum(1, 15, 0))
+
+
+# minimum = int(input("Minimum: "))
+# maximum = int(input("Maximum: "))
+# divisor = int(input("Divisor: "))
+# print(div_sum(minimum, maximum, divisor))
+
+# print(div_sum.__doc__)   # Access Docstring

Concept 2 – Functions/Problem 04.py

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+def foodpanda(food, location="Mohakhali"):
+    """
+    Given food name and location, this function calculates
+    the total price for the food order and returns the
+    total price.
+    """
+    if location != "Mohakhali":
+        delivery_charge = 60
+    else:
+        delivery_charge = 40
+
+    if food == "BBQ Chicken Chesse Burger":
+        meal_cost = 250
+    elif food == "Beef Burger":
+        meal_cost = 170
+    elif food == "Naga Drums":
+        meal_cost = 200
+    else:
+        return "The food is not on the Menu."
+
+    tax = meal_cost * (8 / 100)
+
+    Total_Price = meal_cost + delivery_charge + tax
+    return Total_Price
+
+
+print(foodpanda("Beef Burger", "Dhanmondi"))
+print(foodpanda("Beef Burger"))
+
+# food = input()
+# location = input()
+
+# if location != "":
+#    print(foodpanda(food, location))
+# else:
+#    print(foodpanda(food))
+
+# print(foodpanda.__doc__)   # Access Docstring

Concept 2 – Functions/Problem 05.py

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+def replace_domain(email, domain, old_domain="kaaj.com"):
+    """
+    This function takes email, domain and old domain
+    as 3 input. If email contains the old domain then
+    it changes it to the new domain. Then it returns the
+    email with a comment regarding wheater the email has been
+    changed or not.
+    """
+    new_email = ""
+    index = -1
+    for char in range(len(email)):
+        if email[char] == "@":
+            index = char
+            break
+
+    if index == -1:
+        return "Incorrect E-Mail Adress!"
+
+    new_email = email[: index + 1]
+
+    if old_domain in email:
+        new_email += domain
+        comment = "Changed"
+    else:
+        new_email += domain
+        comment = "Unchanged"
+
+    return f"{comment}: {new_email}"
+
+
+print(replace_domain("alice@kaaj.com", "sheba.xyz", "kaaj.com"))
+print(replace_domain("bob@sheba.xyz", "sheba.xyz"))
+print(replace_domain("bobsheba.xyz", "sheba.xyz"))
+
+# print(replace_domain.__doc__)   # Acess Docstring.

Concept 2 – Functions/Problem 06.py

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+def vowel(string):
+    """
+    Given a string, this function search for any vowels in the given string
+    and returns the founded vowels and the vowel count as output. If no
+    vowel found, it returns "No vowels in the name".
+    """
+    vowel = "aeiouAEIOU"
+    vowel_in, total = "", 0
+
+    for char in string:
+        if char in vowel:
+            vowel_in += char + ", "
+            total += 1
+
+    if total == 0:
+        return "No vowels in the name"
+    else:
+        return f"Vowels: {vowel_in[:-2]}. Total number of vowels: {total}"
+
+
+print(vowel("Steve Jobs"))
+print(vowel("XYZ"))
+print(vowel("Anime"))
+print(vowel("AeIoU"))
+
+# print(vowel.__doc__)   # Acess Docstring.

Concept 2 – Functions/Problem 07.py

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+def ispalindrome(word):
+    """
+    Given a string as input, this function checks wheater
+    the string is a palindrome or not. If yes, it prints
+    "Palindrome" otherwise "Not a palindrome".
+    """
+    string = ""
+    for char in word:
+        if char != " ":
+            string += char
+
+    if string == string[::-1]:
+        print("Palindrome")
+    else:
+        print("Not a palindrome")
+
+
+word = input().lower()
+ispalindrome(word)
+
+# print(ispalindrome.__doc__)   # Access Docstring

Concept 2 – Functions/Problem 08.py

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+def day_to_year(day):
+    """
+    Given number of days as input, this function convert and returns the
+    days into years, month and remaining days.
+    """
+    year = day // 365
+    day = day % (year * 365)
+    month = day // 30
+    day = day % (month * 30)
+
+    return f"{year} years, {month} months and {day} days"
+
+
+print(day_to_year(4320))
+print(day_to_year(4000))
+
+# print(day_to_year.__doc__)   # Access Docstring

Concept 2 – Functions/Problem 09.py

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+def capitalize(string):
+    """
+    Given a string with incorrect caplitalization, this
+    function correctly capitalize the string and then
+    returns it.
+    """
+    if string != "":
+        if string[0] >= chr(97) and string[0] <= chr(122):
+            capitalized_str = chr(ord(string[0]) - 32)
+        else:
+            capitalized_str = string[0]
+
+        for index in range(1, len(string)):
+            if (
+                string[index - 1] == " "
+                and string[index] == "i"
+                and string[index + 1] == " "
+            ):
+                capitalized_str += "I"
+
+            elif (
+                string[index - 2] == "."
+                or string[index - 2] == "!"
+                or string[index - 2] == "?"
+            ):
+                capitalized_str += chr(ord(string[index]) - 32)
+
+            else:
+                capitalized_str += string[index]
+
+        return capitalized_str
+
+    else:
+        return "Please enter a valid string."
+
+
+print(
+    capitalize(
+        "my favourite animal is a dog. a dog has sharp teeth so that it can eat flesh very easily. do you know my pet dog’s name? i love my pet very much."
+    )
+)
+
+print(capitalize(""))
+
+# print(capitalize.__doc__)   # Access Docstring