Python practice 2

12_09_practice.py

@@ -1,29 +1,119 @@
 #Biggie Size - Given a list, write a function that changes all positive numbers in the list to "big". Example: make_it_big([-1, 3, 5, -5]) returns that same list, #changed to [-1, "big", "big", -5].
 
+def make_it_big(number_list = []):
+  for i in range(len(number_list)):
+    if(number_list[i]) > 0:
+      number_list[i] = "big"
+  return number_list
+
 #Count Positives - Given a list of numbers, create a function to replace last value with number of positive values. Example, count_positives([-1,1,1,1]) changes list #to [-1,1,1,3] and returns it.  (Note that zero is not considered to be a positive number).
 
+def count_positives(number_list = []):
+  pos_count = 0
+  for number in number_list:
+    if number > 0:
+      pos_count += 1
+  number_list[-1] = pos_count
+  return number_list
+
 #SumTotal - Create a function that takes a list as an argument and returns the sum of all the values in the list.  For example sum_total([1,2,3,4]) should return 10
 
+def sum_total(number_list = []):
+  sum = 0
+  for i in number_list:
+    sum += i
+  return sum
+
 #Average - Create a function that takes a list as an argument and returns the average of all the values in the list.  For example multiples([1,2,3,4]) should return #2.5
 
+def multiples(number_list = []):
+  average = sum_total(number_list)/len(number_list)
+  return average
+
 #Length - Create a function that takes a list as an argument and returns the length of the list.  For example length([1,2,3,4]) should return 4
 
+def length(list = []):
+  return len(list)
+
 #Minimum - Create a function that takes a list as an argument and returns the minimum value in the list.  If the passed list is empty, have the function return false.  #For example minimum([1,2,3,4]) should return 1; minimum([-1,-2,-3]) should return -3.
 #
+def minimum(number_list = []):
+  if len(number_list) == 0:
+    return False
+  min = number_list[0]
+  for i in number_list:
+    if i < min:
+      min = i
+  return min
+
 #Maximum - Create a function that takes a list as an argument and returns the maximum value in the list.  If the passed list is empty, have the function return false.  #For example maximum([1,2,3,4]) should return 4; maximum([-1,-2,-3]) should return -1.
+def maximum(number_list = []):
+  if len(number_list) == 0:
+    return False
+  max = number_list[0]
+  for i in number_list:
+    if i > max:
+      max = i
+  return max
 
 #Ultimateaalyze - Create a function that takes a list as an argument and returns a dictionary that has the sumTotal, average, minimum, maximum ad length of the list.
 
+def ultimateanalyze(list = []):
+  dictionary = {
+    "sumTotal":sum_total(list), 
+    "average":multiples(list), 
+    "minimum": minimum(list), 
+    "maximum":maximum(list), 
+    "length":length(list)
+  }
+  return dictionary
+
 #ReverseList - Create a function that takes a list as a argument and return a list in a reversed order.  Do this without creating a empty temporary list.  For example #reverse([1,2,3,4]) should return [4,3,2,1]. This challenge is known to appear during basic technical interviews.
 
+def reverse(number_list = []):
+  for i in range(len(number_list)):
+    if i < len(number_list)/2:
+      temp = number_list[i]
+      number_list[i] = number_list[len(number_list)-1-i]
+      number_list[len(number_list)-1-i] = temp
+
 #Ispalindrome- Given a string, write a python function to check if it is palindrome or not. A string is said to be palindrome if the reverse of the string is the same as string. For example, “radar” is a palindrome, but “radix” is not a palindrome.
 
+def ispalindrome(word = []):
+  for i in range(len(word)):
+    if i < len(word)/2:
+      if word[i] != word[len(word)-1-i]:
+        return False
+  return True
+
+
 #Fizzbuzz- Create a function that will print numbers from 1 to 100, with certain exceptions:
   #If the number is a multiple of 3, print “Fizz” instead of the number.
   #If the number is a multiple of 5, print “Buzz” instead of the number.
   #If the number is a multiple of 3 and 5, print “FizzBuzz” instead of the number.
 
+def fizzbuzz():
+  for i in range(1, 101):
+    if i % 3 == 0 and i % 5 != 0:
+      print("Fizz")
+    elif i % 5 == 0 and i % 3 != 0:
+      print("Buzz")
+    elif i % 3 == 0 and i % 5 ==0:
+      print("FizzBuzz")
+    else:
+      print(i)
+
 #Fibonacci- The Fibonacci numbers, commonly denoted F(n) form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones, #starting from 0 and 1. That is,
   #F(0) = 0, F(1) = 1
   #F(n) = F(n - 1) + F(n - 2), for n > 1.
-  #Create a function that accepts any number and will create a sequence based on the fibonacci sequence.
+  #Create a function that accepts any number and will create a sequence based on the fibonacci sequence.
+
+def fibonacci(n):
+  if n < 0:
+    print("incorrect")
+  elif n == 0:
+    return 0
+  elif n == 1 or n == 2:
+    return 1
+  else:
+    return fibonacci(n-1) + fibonacci(n-2)

Lambda.py

@@ -0,0 +1,34 @@
+# Create a generator, primes_gen that generates prime numbers starting from 2.
+def gen_primes(N):
+    prime_numbers = set()
+    for n in range(2, N):
+        if all(n % p > 0 for p in prime_numbers):
+            prime_numbers.add(n)
+            yield n
+print(*gen_primes(10))
+
+# The list 
+prog_lang = [('Python', 3.8),
+             ('Java', 13),
+             ('JavaScript', 2019),
+             ('Scala', 2.13)]
+
+# Sort the list by each language's version in ascending order.
+
+print(sorted(prog_lang, key= lambda x: x[1]))
+
+# Sort the list by the length of the name of each language in descending order.
+
+print(sorted(prog_lang, key= lambda x: len(x[0]), reverse= True))
+
+# Filter the list so that it only contains languages with 'a' in it.
+
+print(list(filter(lambda x: True if 'a' in x[0] else False, prog_lang)))
+
+# Transform the list so that it contains the tuples in the form,("language in all lower case", length of the language string)
+
+print(list(map(lambda x: (x[0].lower(), len(x[0])), prog_lang)))
+
+# Filter the list so that it only contains languages whose version is in integer form.
+
+print(list(filter(lambda x: isinstance(x[1],int), prog_lang)))