Shweta : completed all problems

12_09_practice_shweta.py

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+# 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 big_size(L):
+
+    for i in range(len(L)):
+        if (L[i] >= 0):
+            L[i] = 'big'
+    return L
+
+
+print(big_size([-1, 3, 5, -5]))
+
+# 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 positive(L):
+    counter = 0
+    last = len(L)
+    for i in range(len(L)):
+        if (L[i] > 0):
+            counter += 1
+
+    L[last-1] = counter
+    return L
+
+
+print(positive([-1, 1, 1, 1]))
+
+print(positive([-1, 1, 1, 3]))
+
+
+# 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 sumTotal(list1):
+    sum = 0
+    for val in list1:
+        sum = sum+val
+    return sum
+    # for i in range(len(list1))
+    #    sum=sum+list[i]
+    # return sum
+
+
+print(sumTotal([1, 2, 3, 4]))
+
+
+# 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 avg(list1):
+    sum = 0
+    for val in list1:
+        sum += val
+    return (sum/len(list1))
+
+
+print(avg([1, 2, 3, 4]))
+
+
+# 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 len_list(list1):
+    result_length = (len(list1))
+    return result_length
+
+
+print(len_list([1, 2, 3, -4]))
+print(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 min_value(list1):
+    min = list1[0]
+    for val in list1:
+        if (val < min):
+            min = val
+    return min
+
+
+print(min_value([1, 2, -3, 4]))
+# 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 max_value(list1):
+    if len(list1) < 0:
+        return False
+    maxval = list1[0]
+    for val in list1:
+        if (val > maxval):
+            maxval = val
+    return maxval
+
+
+print(max_value([1, 2, 3, 4, -4]))
+
+# 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(list1):
+    list2 = {'sumTotal': 0, 'average': 0,
+             'minimum': list1[0],  'maximum': list1[0], 'length': len(list1)}
+    sum = 0
+    for val in list1:
+
+        sum = sum+val
+        if val < list2['minimum']:
+            list2['minimum'] = val
+        if val > list2['maximum']:
+            list2['maximum'] = val
+
+    list2['sumTotal'] = sum
+    list2['average'] = sum/len(list1)
+
+    return list2
+
+
+print(ultimateanalyze([1, 2, 3, 4]))
+
+
+# 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 reverselist(list):
+    length = len(list)
+    for i in range(length//2):
+        print(i)
+        tmp = list[i]
+        list[i] = list[length-i-1]
+        list[length-i-1] = tmp
+    return list
+
+
+print(reverselist([1, 2, 3, 4, 5]))
+
+
+# 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 palindrome(str1):
+    reversestr = str1[::-1]
+    if (reversestr == str1):
+        return "palindrome"
+    else:
+        return 'not palindrome'
+
+
+print(palindrome('saas'))
+print(palindrome('sbas'))
+
+
+# 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("fizzbuzz")
+        elif (i % 5 == 0):
+            print("buzz")
+        elif (i % 3 == 0):
+            print("fizz")
+        else:
+            print(i)
+
+
+print(fizzbuzz())
+
+
+# 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.
+def fibonacci(num):
+    if (num == 0):
+        return 0
+    elif (num == 1):
+        return 1
+    else:
+        return fibonacci(num-1) + fibonacci(num-2)
+
+
+num = int(input("enter number: "))
+for i in range(num):
+    print(fibonacci(i))