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WEEK 5.md

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Sure, here are the questions converted into multiple-choice questions with the correct answers checked:

  1. Which is the fastest sorting algorithm?

    • A) Bubble Sort
    • B) Bucket Sort
    • C) Quick Sort ✓
    • D) Insertion Sort

  2. How can you remove all items from a dictionary?

    • A) dict.clear() ✓
    • B) del dict
    • C) dict.remove_all()
    • D) dict.pop()

  3. What happens if you try to add a new key to a dictionary that already exists?

    • A) The key and its associated value will be updated. ✓
    • B) The key and its associated value will be added.
    • C) The key will be added, but the associated value will remain unchanged.
    • D) An error will occur.

  4. Which of the following is true about dictionaries?

    • A) There can be multiple same keys.
    • B) Every value must be unique.
    • C) Every key must be unique. ✓
    • D) We can’t get every key from the dictionary.

  5. What is the syntax to create a dictionary?

    • A) D = []
    • B) D = {}✓
    • C) D = ()
    • D) D = dictionary()

  6. What will be the output of the following code? ![[Pasted image 20231029093946.jpg]]

    • A) 'a' 'b' 'c'
    • B) 20 30 50
    • C) ('a', 20), ('b', 30), ('c', 50) ✓
    • D) ('a', 'b', 'c') (20, 30, 50)

  7. In the Monte Hall Problem, what is the probability of winning if you switch doors after the host reveals a goat behind one of the other doors?

    • A) 1/3
    • B) 1/2
    • C) 2/3 ✓
    • D) 3/4

  8. In the Monte Hall Problem, what is the probability of winning if you do not switch doors after the host reveals a goat behind one of the other doors?

    • A) 1/3 ✓
    • B) 1/2
    • C) 2/3
    • D) 3/4

  9. What is the name of the game show that the Monte Hall Problem was based on?

    • A) Jeopardy
    • B) Wheel of Fortune
    • C) The Price is Right
    • D) Let's Make a Deal ✓

  10. Which module in Python can be used for Speech to Text conversion?

    • A) SpeechRecognition ✓
    • B) PyAudio
    • C) Wave
    • D) all of the above do the same for these

Programming Assignment 1

You are given a string S. Write a function count_letters which will return a dictionary containing letters (including special character) in string S as keys and their count in string S as values.
(input and output will be handled by us you just need to write the function and return the dictionary)

  • Input
    The Joy of computing

  • Output
    {'T': 1, 'h': 1, 'e': 1, ' ': 3, 'j': 1, 'o': 3, 'y': 1, 'f': 1, 'c': 1, 'm': 1, 'p': 1, 'u': 1, 't': 1, 'i': 1, 'n': 1, 'g': 1}

  • Explanation: T is appeared once in the string, similarly o is appeared 3 times in the string and so on. (You do not have to worry about the order of arrangement in your dictionary)

def count_letters(S):
    output_dict = {}
    for char in S:
        if char in output_dict:
            output_dict[char] += 1
        else:
            output_dict[char] = 1
    return output_dict

S = input()
d = count_letters(S)
d1 = {}
for i in S:
    try:
        d1[i]+=1
    except KeyError:
        d1[i]=1
if d1 == d:
    print('yes')
else:
    print('no')

## Programming Assignment 2

You are given a list L. Write a function uniqueE which will return a list of unique elements is the list L in sorted order. (Unique element means it should appear in list L only once.)
Input will be handled by us

  • Input
    [1,2,3,3,4,4,2,5,6,7]

  • Output
    [1,5,6,7]

  • Explanation
    Elements 1,5,6,7 appears in the input list only once.

def uniqueE(L):
  ans=list()
  for a in L:
    if L.count(a)==1:
      ans.append(a)
  return(sorted(ans))   
  
L = [int(i) for i in input().split()]
print(uniqueE(L))

Programming Assignment 3

You are given a list L. Write a program to print first prime number encountered in the list L.(Treat numbers below and equal to 1 as non prime)
Input will be handled by us.

  • Input
    [1,2,3,4,5,6,7,8,9]

  • output
    2

  • Explanation
    Since 2 is the first prime number is list L, therefor it is printed.

def is_prime(num):
    if num <= 1:
        return False
    if num == 2:
        return True
    if num % 2 == 0:
        return False
    for i in range(3, int(num**0.5) + 1, 2):
        if num % i == 0:
            return False
    return True

def find_first_prime(L):
    for num in L:
        if is_prime(num):
            return num
    return None

L = [int(i) for i in input().split()]
first_prime = find_first_prime(L)
if first_prime is not None:
    print(first_prime)