1. Take an integer list and develop python code to find mean of the above list.

a = [1,2,3,4,5,6,7,8,9]
b = len(a)
c = sum(a)
print("Mean of the list is :"+str(c/b))

RUN

2. Develop python code to find middle elements in the list ( if even length list then middle two elements).

a = [1,2,3,4,5,6,7,8,9]
c = len(a)
if c%2 == 0:
    print(a[(c//2)-1],a[c//2])
else:
    print(a[c//2])
Try for an even length

RUN

3. Develop python code to read any string and store each character as an element in a list.

a = input("enter any string :")
c = []
for i in a:
    c.append(i)
print(c)
## Or 
b = [0]*len(a)
for i in range(len(a)):
    b[i] = a[i]
print(b)

RUN

4. Develop python code to read any string and create a list only with consonants by skipping vowels.

a = input("Enter any string :")
b = []
for i in a:
    if i != "a" and i != "e" and i != "i" and i != "o" and i != "u" :
        b.append(i)
print(b)
## Or
c = ["a","e","i","o","u"]
for i in a:
    if i not in c:
        b.append(i)
## Or
for i in a:
   if i in c:
        continue
    b.append(i)
print(b)

RUN

5. Develop python code to check a list is palindrome or not.

a = [1,2,3,4,3,2,1]
b = []
for i in range(len(a)-1,-1,-1):
    b.append(a[i])
if a == b:
    print("Palindrome")
else:
    print("Not a Palindrome")

RUN

6. Develop python code to count the number is integers, float values, strings, complex numbers, tuples and lists in a given list.

a = [1,2,3,4,"a",
"world","hello","python",
1.2,43.44,3.14,[4,65,43],(4+6j),(3+5j),
(54,32,2,4),[6.5,43,6.55,9.76],(1," ",3,5)]
n = f = c = s = l = t = 0
for i in a:
    if type(i) == type(1):
        n = n+1
    if type(i) == type(1.5):
        f = f+1
    if type(i) == type((1j)):
        c = c+1
    if type(i) == type("1"):
        s = s+1
    if type(i) == type([]):
        l = l+1
    if type(i) == type(()):
        t = t+1
print("Integers :",n,"\nFloat :",f,"\nComplex :",c,"\nstrings :",s,"\nLists :",l,"\nTuples :",t)

RUN

7. Develop python code to delete the odd indexed elements in the given list.

a = [1,2,3,4,5,6,7,8,9,0]
b = a[1:len(a):2]
for i in range(len(b)):
    a.remove(b[i])
print(a)

RUN

8. Develop python code to delete the even indexed elements in the given list.

a = [1,2,3,4,5,6,7,8,9,0]
b = a[0:len(a):2]
for i in range(len(b)):
    a.remove(b[i])
print(a)

RUN

9. Develop python code to print odd numbers sum and even numbers sum in the given list.

a = [1,2,3,2,4,65,43,7,84,23,65,44,11,45,67]
b = c = 0
for i in a:
    if i%2 == 0:
        b = b+i
    else:
        c = c+i
print("Even Numbers sum is :"+str(b),"Odd Numbers sum is :"+str(c))

RUN

10. Develop python code to swap adjacent elements in the given list.
If input list is [3,9,5,1] then output should be [9,3,1,5]
if input list is [‘a’,’b’,’x’,’y’] then output should be [‘b’,’a’,’y’,’x’].

a = [1,2,3,4,5,6]
b = 0
for i in range(len(a)//2):
    a[b],a[b+1] = a[b+1],a[b]
    b = b+2
print(a)

RUN

11. Develop python code to swap the fist half and second half elements in the given list
if input list is [1,2,3,4] then output should be [3,4,1,2]

a = [11,22,33,44,55,66]
b = len(a)//2
a[:b],a[b:] = a[b:],a[:b]
print(a)

RUN

12. Develop python code to create a list with first character of each element in the given list of strings.

a = ["hello","world","happy","learning","python"]
b = []
for i in a:
    b.append(i[0])
print(b)

RUN

13. Develop python code to remove duplicate values in the given list.

a = [1,2,3,4,3,2,1,8,7,6,5,4,9,0,8,0,8,6,4,3,2]
a = list(set(a))## or use a = [*set(a)]
print(a)

RUN

14. Develop python code to create a new list if start value, end value and increment/decrement is given.

a = int(input("Enter start value :"))
b = int(input("Enter end value :"))
c = int(input("Enter increment/decrement value :"))
li = [int(x) for x in range(a,b+1,c)]
print(li)

RUN

15. Develop python code to create two lists one with +ve numbers and another with -ve numbers from the given list which has both +ve & -ve values.

a = [1,2,3,4,3,-7,-90,-5,3,0,-43,-3,-1,54,8]
b = []
c = []
for i in a:
    if i > -1:
        b.append(i)
    else:
        c.append(i)
print("Positive elements list is :"+str(b),"Negative elements list is :"+str(c))

RUN

16. Develop python code to combine two lists one with name and another with ages.
If lists are [‘a’,’b’] & [19,20] then output should be [‘a’,19,’b’,20]

a = ["name1","name2","name3","name4"]
b = [21,43,54,24]
c = []
for i in range(len(a)):
    c.append(a[i])
    c.append(b[i])
print(c)

RUN

17. Develop python code to print sum of sub lists in the given list.

a = [1,2,[11,22,33],45,[1,2,3,4],-765,"python",[98,4,21],[4,5,-4]]
for i in a:
    if type(i) == type([]):
        print("sum of the sub list is :"+str(sum(i)))

RUN

18. Develop python code to sum of two lists if inputs are [1,2,3] & [4,5,6] output should be [5,7,9]

a = [1,2,3,4,5]
b = [6,7,8,9,10]
c = []
for i in range(len(a)):
    d = [a[i],b[i]]
    e = sum(d)
    c.append(e)
print(c)

RUN

19. Develop python code to combine two lists without using + operator.

a = [1,2,3,"hello","hi"]
b = [-54,-34,5,"world","python"]
c = a
for i in b:
    c.append(i)
print(c)

RUN

20. Develop python code to read a number and take a list and print the list number of times without using *

a = int(input("Enter any Number :"))
b = ["hello world",63,"rgukt",73,"iiit",637]
c = len(b)
for i in range(1,a):
    for j in range(c):
        b.append(b[j])
print(b)

RUN

21. Develop python code to find median of the given list.

a = int(input("Enter length of the list :"))
b = [int(x) for x in range(1,a+1)]
c = len(b)
print(b)
if a%2 == 1:
    print(b[c//2])
else:
    print((b[c//2]+b[c//2-1])/2)

RUN

22. Take a list with duplicate values and print how many time each element has occurred adjacent to it.
If input is [11,22,33,44,22,33] then output should be [11,0,22,1,33,1,44,0]

a = [11,22,33,44,55,11,11,33,44,22,33,44,55,66,22,55]
b = []
for i in a:
    if i not in b:
        b.append(i)
        b.append(a.count(i)-1)
print(b)

RUN

23. Take a list with duplicate values and remove all duplicate values, create a new list with duplicate values.

a = [11,22,33,44,55,11,11,33,44,22,33,44,55,66,22,55]
b = []
for i in a:
    if i not in b:
        b.append(i)
        a.remove(i)
a,b = b,a
print("New  Duplicate list :",b,"list is :",a)

RUN

24. Treat the below list as a matrix
[ [11,22,33],
  [44,55,66],
  [77,88,99] ] print the dimension of the matrix.

a = [[11,22,33],
     [44,55,66],
     [77,88,99]]
row = len(a)
col = len(a[0])
print("It is a "+str(row)+"x"+str(col))

RUN

25. Take two lists and verify whether they are equal or not.( code must be logic based).

a = [1,2,3,4,5,6]
b = [1,2,3,4,5,6]
if len(a) == len(b):
    for i in range(len(a)):
        if a[i] != b[i]:
            print("Not equal")
            break
    else:
        print("Equal")
else:
    print("Not equal")

RUN

26. List is [1,2,3,4,5,6,7,8,9], print the below pattern.
[1, 2, 3, 4, 5, 6, 7, 8, 9]
[2, 3, 4, 5, 6, 7, 8, 9]
[3, 4, 5, 6, 7, 8, 9]
[4, 5, 6, 7, 8, 9]
[5, 6, 7, 8, 9]
[6, 7, 8, 9]
[7, 8, 9]
[8, 9]
[9]

a = [1,2,3,4,5,6,7,8,9]
for i in range(len(a)):
    print(a[i:])

RUN

27. List is [1,2,3,4,5,6,7,8,9], print the below pattern.
[1]
[1, 2]
[1, 2, 3]
[1, 2, 3, 4]
[1, 2, 3, 4, 5]
[1, 2, 3, 4, 5, 6]
[1, 2, 3, 4, 5, 6, 7]
[1, 2, 3, 4, 5, 6, 7, 8]

a = [1,2,3,4,5,6,7,8,9]
for i in range(1,len(a)):
    print(a[:i])

RUN

28. Take a list of words and verify whether the word RGUKT is there or not. (do not use membership operator)

a = ["hello","world","welcome","RGUKT","aeiou","python"]
for i in a:
    if i == "RGUKT":
        print("word RGUKT is in the list.")
        break
else:
    print("word RGUKT is not the list.")

RUN

29. Take a list of integers and delete one by one element using loop, at the end list should be empty.

a = [1,2,3,4,55,66,77,88,99,"hello","world","python"]
for i in range(len(a)):
    del(a[0])
print(a)

RUN

30. Take a line of text and count the number of characters in it. ( convert text to list).

a = "hello world.python is a big snake."
a = list(a)
print(len(a))

RUN

31. Take a list and print the output according to it
if input is [3,2] then output should be
Output=
###
##
if input is [5,2,1,4] then output should be
Output=
#####
##
#
####

a = [4,3,5,2]
for i in a:
    print("#"*i)

RUN

32. Take a list of words and create another list of integers representing the lengths of the correspond words.

a = ["hello","world","welcome","RGUKT","aeiou","python"]
b = []
for i in a:
    b.append(len(i))
print(b)

RUN

33. Write a program that takes a list of words and returns the length of the longest one.

a = []
c = ""
for i in range(10):
    b = input("Enter any string :")
    a.append(b)
    if len(b) >= len(c):
        c = b
print(len(c)," is the longest length of the word")

RUN

34. Take a list and sort the elements either in ascending order or descending order.

a = [1,5,4,23,-65,65,-99,54,100,34,32,67,44,4,7]
b = sorted(a)
print("ascending order",b)
Or
a = [1,5,4,23,-65,65,-99,54,100,34,32,67,44,4,7]
a.sort()
print("ascending order",a)
a.reverse()
print("descending order",a)

RUN

35. Take a nested list and print sub lists in it.

a = [[1,2,3],["hi","hello","rgukt","iiit"],3,"743",[3,2],756,"hello"]
for i in a:
    if type(i) == type([]):
        print(i)

RUN

36. Take a list and check that list has any sub list or tuple in it.

a = [[1,2,3],["hi","hello","rgukt","iiit"],3,"743",(1,24,"world"),[3,2],756,"hello",("abcd",45,-8)]
list = tuple = 0
for i in a:
    if type(i) == type([]):
        list = list+1
    if type(i) == type(()):
        tuple = tuple+1
if list > 0:
    print("list has a sub list.")
if tuple > 0:
    print("list has a tuple.")

RUN

37. Take a list and find second largest element in it.

a = [1,2,3,4,5,4,3,23,45,32,-23,4,43,76,12,12,11,28]
a.sort(reverse = True)
print("Second largest number is :",a[1])

RUN

38. Take a list and find second smallest element in the list.

a = [1,2,3,4,5,4,3,23,45,32,-23,4,43,76,12,12,11,28]
a.sort()
print("Second smallest number is :",a[1])

RUN

39. Take a list and check whether is an empty list or not.

a = [1,2,3,4,56]
b = []
if len(a) == 0:
    print("list is empty")
else:
    print("list is not empty.")
if len(b) == 0:
    print("list is empty")
else:
    print("loist is not empty.")

RUN

40. Take two lists and print TRUE if they have at least one common number.

a = [1,2,3,4,5,6,7,8,9,0]
b = [11,22,33,44,55,66,77,88,99,0]
for i in a:
    if i in b:
        print("True")
        break

RUN

41. Take any integer list and verify whether all the elements are in ascending order or not.

a = [1,2,3,4,56,67]
a1 = [5,4,3,21,1]
b = sorted(a)
b1 = sorted(a1)
if a == b:
    print("list a elements are in ascending order.")
else:
    print("list a elements are not in ascending order.")
if a1 == b1:
    print("list a1 elements are in ascending order.")
else:
    print("list a1 elements are not in ascending order.")

RUN

42. Create a list using loop, appending must be from reverse.

a = [int(x) for x in range(10,0,-1)]
print(a)

RUN

43. Take a list with single characters, and print the list in descending order.

list = ["s","j","n","w","u","f"]
list.sort(reverse = True)
print(list)

RUN

44. Create list with 1 to 10 numbers. without using for loop and while loop and list elements must be shuffled.

a = [1,2,3,4,5,6,7,8,9,10]
import random
random.shuffle(a)
print(a)

RUN

*Questions Prepared by--Srikanth.D

Mentor in IT,Dept of IT,RGUKT-SRIKAKULAM
duppada8@rguktsklm.ac.in