Problems on Lists-1

[champaksworldcreate]

1. Write a program to find the frequency of elements in a list
   For example a=[1,2,1,1,3,3], the output will be 1:3, 2;1, 3;2
2. Create a list containing the table of a number. For example n=3 will give [3,,6,9,12,15,18,21,24,27,30]
3. Find the common elements common in 2 lists a1=[1,2,3], b=[2,3,4] , common =[2,3]
4. Create a list, sort it and remove duplicates and print it
5. Find the product of all elements in a list

[kuldeepsinghvns]

Write a program to find the frequency of elements in a list
For example a=[1,2,1,1,3,3], the output will be 1:3, 2;1, 3;2

l = [1, 2, 1, 1, 3, 3, 0, 0, 0, 2]
print(l)
singleitems = []
for x in l:
if x not in singleitems:
singleitems.append(x)
print(singleitems)
for x in singleitems:
print(x, ":", l.count(x), end=",")

[kuldeepsinghvns]

Create a list containing the table of a number. For example n=3 will give [3,,6,9,12,15,18,21,24,27,30]
num = 3
l = [num * i for i in range(1, 11)]
print(l)

[kuldeepsinghvns]

Unique Elements

n = [1, 2, 3, 3, 4, 4, 5, 6, 7, 0, 0, 9, 0, 9]
unique = []
for x in n:
if n.count(x) > 1:
unique += [x]
print(unique)