String #6
def reverse(astring):
# your code here
bstring=""
for i in range(len(astring)-1,-1,-1):
bstring=bstring+astring[i]
return bstring
print(reverse("Python"))
print(reverse("Elliot"))
print(reverse("World"))
Output #6
Srting #7
def mirror(mystr):
# your code here
yourstr=""
for i in range(len(mystr)-1,-1,-1):
yourstr=yourstr+mystr[i]
return mystr+yourstr
testEqual(mirror('good'),'gooddoog')
testEqual(mirror('Python'),'PythonnohtyP')
testEqual(mirror(''), '')
testEqual(mirror('a'),'aa')
Output #7
String #11
from test import testEqual
def remove(substr,theStr):
# your code here
index=theStr.find(substr,0,-1)
if index < 0:
return theStr #when the substring fails to be found
newstr=theStr[:index]+theStr[index +len(substr):]
return newstr
testEqual(remove('an', 'banana'),'bana')
testEqual(remove('cyc', 'bicycle'), 'bile')
testEqual(remove('iss', 'Mississippi'), 'Missippi')
testEqual(remove('egg', 'bicycle'), 'bicycle')
Output #11
String #12
from test import testEqual
def remove_all(substr,theStr):
# your code here
newstr=theStr.replace(substr,"")
return newstr
testEqual(remove_all('an', 'banana'), 'ba')
testEqual(remove_all('cyc', 'bicycle'), 'bile')
testEqual(remove_all('iss', 'Mississippi'), 'Mippi')
testEqual(remove_all('eggs', 'bicycle'), 'bicycle')
Output #12
List #7
def odd_count(list):
number=0
for number in list:
if number % 2==1:
return number
print(odd_count([2,3,5]))
print(odd_count([7,4,8]))
print(odd_count([6,9,11]))
output
List #8
def sum_enumber(list):
even_number=0 #counting variable
for number in list:
if number % 2==0:
even_number +=number
return even_number
print(sum_enumber([2, 3, 4, 5,10]))
print(sum_enumber([6,8,9,11,12,13]))
print(sum_enumber([23,24,26]))
Output #8
List #9
def sum_number(list):
neg_number=0 #counting variable
for number in list:
if number <0:
neg_number +=number
return neg_number
print(sum_number([-2, 3, -4, -5,10]))
print(sum_number([6,-8,9,-11,12,-13]))
print(sum_number([23,-24,-26]))
Output #9
List #14
s = 'I love spom! Spom is my favorite food. Spom, spom, spom, yum!'
def replace(s,old, new):
words=s.split(old)
new_s=new.join(words)
return new_s
print replace (s, "om", "am")
print replace (s, 'o', 'a')
Output #14
I love spam! Spam is my favorite food. Spam, spam, spam, yum!
I lave spam! Spam is my favarite faad. Spam, spam, spam, yum!
