pythonExercise

# Exercise 11.1 – Iteration

# a. Write a program that will print your full name and student number 10 times.

for i in range(10):
    print("My name is Rohit Biswas")
    print("My student number is 001811301033")

# b. Write another program that will ask the user for a “wish” (eg. What do you wish for on
# your birthday) and the number of time they want that wish to be displayed. Then print the
# wish the number of times specified.

wish = input("What do you wish for on your birthday: ")
num = int(input("How many times do you want wish to be displayed: "))

for j in range(num):
    print(wish)



# Exercise 11.2 – Sum
# Given numLst = [1, 2, 3, 4, 5] we can compute the sumImperative in an imperative way. You have
# to implement it such that it uses imperative way to compute the sum of the list.


numLst = [1, 2, 3, 4, 5]
sumImperative = 0
for n in numLst:
    sumImperative += n
print(sumImperative)


# Exercise 11.3 – Even numbers
# Using the imperative way of programming, find even numbers (printEvenNumbers) given a list of
# natural numbers:

naturalNumbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

for i in naturalNumbers:
    if i % 2 == 0:
        print(i)


# Exercise 11.4 – Lists
# Using the imperative coding style, implement a function groupList that given a list (list) and a
# group length (glength), returns a list of lists with length glength.


def groupList(l, s):
    main_output = []
    temp_list = []
    n = 0
    for i in l:
        temp_list.append(i)
        n = n + 1
        if n == s:
            main_output.append(temp_list.copy())
            temp_list = []
            n = 0

    return main_output

#ab = [1,2,3,4,5,6,7,8,9]
#print(groupList(ab,3))



# Exercise 11.5 – Character Lists
# Write a program to check that a given character is in a given string. It will ask the user to enter a
# string and a character to search. Use linear search for this program where you loop through all the
# characters.

st = input("Enter a string: ")
ch = input("Enter a character to search: ")
found = False
for c in st:
    if c == ch:
        found = True

if found:
    print("The character is present in the string")
else:
    print("The character is not found in the string")



# Exercise 13.1
# Given numLst = [1, 2, 3, 4, 5], define a functional sumFunctional to sum the list.


def sumFunctional(l):
    sum = 0
    for i in l:
        sum += i
    return sum


numLst = [1, 2, 3, 4, 5]
print(sumFunctional(numLst))


# Exercise 13.2 – Recursion
# Recall from F# sessions, where the factorial of an integer number is defined by the following


# a. Write a Python factorialR() function using recursion

def factorialR(n):
    if n == 0 or n == 1:
        return 1
    else:
        return n * factorialR(n-1)

#print(factorialR(5))



# b. Write a Python factorialI() function using iterative style:

def factorialI(n):
    factorial = 1
    if n > 0:
        for i in range(1, n+1):
            factorial = factorial * i
    return factorial

#print(factorialI(5))



# Exercise 13.3 – Higher-order, lambda
# Write a function to find even numbers (printEvenNumbers) given a list of natural numbers:
# naturalNumbers = [0,1,2,3,4,5,6,7,8,9]
# Use lambda and filter() function.


naturalNumbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]


def printEvenNumbers(l):
    even = list(filter(lambda i: (i % 2 == 0), l))
    print("Even numbers in the list: ", even)

printEvenNumbers(naturalNumbers)