third week homework

hackerrank.py

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+# ## Bonus Question 1
+# [HACKERRANK: FIND DIGITS](https://www.hackerrank.com/challenges/find-digits/problem)
+
+def findDigits(n):
+    n=str(n)
+    l=len(n)
+    summ=0
+    for i in range(l):
+        if int(n[i])==0:
+            continue
+        elif int(n)%int(n[i])==0:
+            summ+=1
+    return summ
+
+# ## Bonus Question 2
+# [HACKERRANK: CAPITALIZE](https://www.hackerrank.com/challenges/capitalize/problem)
+
+def solve(s):
+    s=s.split(' ')
+    for i in range(len(s)):
+        if s[i]=='':
+            continue
+        s[i]=s[i][0].capitalize()+s[i][1:]
+    s=' '.join([str(item) for item in s])
+    return s
+solve('chris alan')

q1.py

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+# ## 1-perfect_number.py
+# Perfect number: Perfect number is a positive integer that is equal to the sum of its proper divisors.
+
+# The smallest perfect number is `6`, which is the sum of `1`, `2`, and `3`. 
+
+# Some other perfect numbers are `28(1+2+4+7+14=28)`, `496` and `8128`.
+
+# Write a function that finds perfect numbers between `1` and `1000`.
+# Check perfect numbers between `1` and `1000` and find the sum of the perfect numbers using reduce and filter functions. <br />
+
+def perfect_number(x):
+    summ=0
+    for i in range(1,x):
+        if x%i==0:
+            summ+=i
+    if summ==x:
+        return True
+from functools import reduce
+print(reduce(lambda a,b:a+b,(list(filter(lambda x: perfect_number(x),range(1,1000))))))

q2.py

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+# ## 2-reading_number.py
+# Write a function that outputs the transcription of an input number with two digits.
+
+# Example:
+# ```
+# 28---------------->Twenty Eight
+
+reading1=['','One','Two','Three','Four','Five','Six','Seven','Eight','Nine']
+reading2=['Twenty','Thirty','Forty','Fifty','Sixty','Seventy','Eighty','Ninety']
+reading3=['Ten','Eleven','Twelve','Thirteen','Fourteen','Fifteen','Sixteen','Seventeen','Eighteen','Nineteen']
+def reading_numb():
+    x=input("A number only with two digits: ")
+    if x.isdigit()==False:
+        read= x
+    elif int(x)<10 or int(x)>99:
+        read= x
+    elif 20>int(x)>=10:
+        read='{}--------->{}'.format(x,reading3[int(x[1])])
+
+    else:
+        read='{}--------->{} {}'.format(x,reading2[int(x[0])-2],reading1[int(x[1])])
+    return read
+print(reading_numb())

q3.py

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+# ## 3-alphabetical_order.py
+# Write a function that takes an input of different words with hyphen (-) in between them and then:<br />
+# * sorts the words in alphabetical order,
+# * adds hyphen icon (-) between them, 
+# * gives the output of the sorted words.
+
+# Example:
+# ```
+# Input  >>> green-red-yellow-black-white
+# Output >>> black-green-red-white-yellow 
+# ```
+
+def alphabetical_order():
+    words=input("Words with -  : ")
+    words=words.split('-')
+    words.sort()
+    words='-'.join(words)
+    return words
+print(alphabetical_order())

q4.py

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+# ## 4-unique_list.py
+# Write a function that filters all the unique(unrepeated) elements of a given list.
+
+# Example:
+# ```
+# Function call: unique_list([1,2,3,3,3,3,4,5,5])
+# Output       : [1, 2, 3, 4, 5]
+# ```
+
+def unique_list(list):
+    new_list=[]
+    for i in list:
+        if i in new_list:
+            continue
+        else:
+            new_list.append(i)
+    return new_list
+unique_list([1,2,3,3,3,3,4,5,5])

q5.py

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+# ## 5-equal_reverse.py
+# Write a function that controls the given inputs whether they are equal to their reversed order or not.
+
+# Example:
+# ```
+# Input  >>> madam, tacocat, utrecht 
+# Output >>> True, True, False
+# ```
+def reserved(x):
+    if x==x[::-1]:
+        return True
+    else:
+        return False
+print(list(map(lambda x: reserved(x),['madam','tacocat','utrecht'])))