12th Computer Science Weekly Test - 3 ( Strings and String manipulations )

St. Britto Hr. Sec. School - Madurai

12th Computer Science Weekly Test - 3 ( Strings and String manipulations )-Aug 2020

Time : 1.30 Hours

Part - A

Multiple Choice Question - Answer All Question

What will be the output of the following code?
str1 = "Chennai Schools"
str1[7] = "-"

Chennai-Schools
Chenna-School
Type error
Chennai

In python __________ are immutable.

Characters
Strings
Numbers
Functions

What is the output from the following statement?
str1 ="welcome"
print (str1 [: : 3]

come
orne
wee
wel

The________ operator is used to append a new string with an excisting string.

What is the output for the following?
'mammals': find ('ma')

0
1
-1
3

Which of the following is used as a place holders which get replaced along with format function?

The_________function is a powerful function used for formatting strings.

format()
string()
Slice ()
format string()

Which of the following formatting operator is used to represent signed decimal integer?

% d or % i
%s or% c
%g or %x
%s or %e

What is the output for the following?
'mammals'. find ('ma',2,5)

0
3
-1
1

String index values are also called as

class
function
subscript
arguments

Part - B

Generic 2 - Answer All Question

Program to access each character with its negative subscript of a giving string
str1 = input ("Enter a string: ")
index=-1
while index >= -(len(str1)):
print ("Subscript[",index,"] : " + str1[index])
index += -1

Write a program to print the following output
c
co
COM
COM
COMP
COMPU
COMPUT
COMPUTE
COMPUTER

How will you manipulate the strings?

Write a python a program to print your name 10 times.

Code lines to delete a particular character in a string:
>>> str1="How are you"
>>> del str1[2]
Traceback (most recent call last):
File "<pyshell#7>", line 1, in <module>
del str1[2]

Part - C

Generic 3 - Answer All Question

Write a note on
(i) isalnum ()
(ii) isalpha ()
(iii) isdigit ()

Write a program to accept a string and print it in reverse order.

Write the description for the following escape sequence.
(i) \r
(ii) \000
(iii) \v

Program to check whether the given string is palindrome or not
str1 = input ("Enter a string: ")
str2 = ' '
index=-1
for i in str1:
str2 += str1[index]
index -= 1
print ("The given string = { } \n The Reversed string = { }".format(str1, str2))
if (str1==str2):
print ("Hence, the given string is Palindrome")
else:
print ("Hence, the given is not a palindrome")

Write a short about the followings with suitable example:
(a) capitalize( )
(b) swapcase( )

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12th Computer Science Weekly Test - 3 ( Strings and String manipulations )

St. Britto Hr. Sec. School - Madurai

12th Computer Science Weekly Test - 3 ( Strings and String manipulations )-Aug 2020

Part - A

Multiple Choice Question - Answer All Question

What will be the output of the following code? str1 = "Chennai Schools" str1[7] = "-"

In python __________ are immutable.

What is the output from the following statement? str1 ="welcome" print (str1 [: : 3]

The________ operator is used to append a new string with an excisting string.

What is the output for the following? 'mammals': find ('ma')

Which of the following is used as a place holders which get replaced along with format function?

The_________function is a powerful function used for formatting strings.

Which of the following formatting operator is used to represent signed decimal integer?

What is the output for the following? 'mammals'. find ('ma',2,5)

String index values are also called as

Part - B

Generic 2 - Answer All Question

Program to access each character with its negative subscript of a giving string str1 = input ("Enter a string: ") index=-1 while index >= -(len(str1)): print ("Subscript[",index,"] : " + str1[index]) index += -1

Write a program to print the following output c co COM COM COMP COMPU COMPUT COMPUTE COMPUTER

How will you manipulate the strings?

Write a python a program to print your name 10 times.

Code lines to delete a particular character in a string: >>> str1="How are you" >>> del str1[2] Traceback (most recent call last): File "<pyshell#7>", line 1, in <module> del str1[2]

Part - C

Generic 3 - Answer All Question

Write a note on (i) isalnum () (ii) isalpha () (iii) isdigit ()

Write a program to accept a string and print it in reverse order.

Write the description for the following escape sequence. (i) \r (ii) \000 (iii) \v

Write a short about the followings with suitable example: (a) capitalize( ) (b) swapcase( )

Comment

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Tamilnadu Stateboardszs - Class

What will be the output of the following code?
str1 = "Chennai Schools"
str1[7] = "-"

What is the output from the following statement?
str1 ="welcome"
print (str1 [: : 3]

What is the output for the following?
'mammals': find ('ma')

What is the output for the following?
'mammals'. find ('ma',2,5)

Program to access each character with its negative subscript of a giving string
str1 = input ("Enter a string: ")
index=-1
while index >= -(len(str1)):
print ("Subscript[",index,"] : " + str1[index])
index += -1

Write a program to print the following output
c
co
COM
COM
COMP
COMPU
COMPUT
COMPUTE
COMPUTER

Code lines to delete a particular character in a string:
>>> str1="How are you"
>>> del str1[2]
Traceback (most recent call last):
File "<pyshell#7>", line 1, in <module>
del str1[2]

Write a note on
(i) isalnum ()
(ii) isalpha ()
(iii) isdigit ()

Write the description for the following escape sequence.
(i) \r
(ii) \000
(iii) \v

Write a short about the followings with suitable example:
(a) capitalize( )
(b) swapcase( )