python sets
# You can't create a set like this in Python
my_set = {} # ---- This is a Dictionary/Hashmap
# To create a empty set you have to use the built in method:
my_set = set() # Correct!
set_example = {1,3,2,5,3,6}
print(set_example)
# OUTPUT
# {1,3,2,5,6} ---- Sets do not contain duplicates and are unorderedpython set &
>>> A = {0, 2, 4, 6, 8};
>>> B = {1, 2, 3, 4, 5};
>>> print("Union :", A | B)
Union : {0, 1, 2, 3, 4, 5, 6, 8}
>>> print("Intersection :", A & B)
Intersection : {2, 4}
>>> print("Difference :", A - B)
Difference : {0, 8, 6}
# elements not present both sets
>>> print("Symmetric difference :", A ^ B)
Symmetric difference : {0, 1, 3, 5, 6, 8}sets in python
The simplest way to create set is:
1. from list
code:
s = [1,2,3]
set = set(s)
print(set)
2. s,add() method
code:
set.add(1)
set.add(2)
set.remove(2)
print(set) // 1
3. Set conatins unique elementspython set
# A set contains unique elements of which the order is not important
s = set()
s.add(1)
s.add(2)
s.remove(1)
print(s)
# Can also be created from a list (or some other data structures)
num_list = [1,2,3]
set_from_list = set(num_list)get length of set python
# Create a set
seta = {5,10,3,15,2,20}
# Or
setb = set([5, 10, 3, 15, 2, 20])
# Find the length use len()
print(len(setb))python set
set_example = {1, 2, 3, 4, 5, 5, 5}
print(set_example)
# OUTPUT
# {1, 2, 3, 4, 5} ----- Does not print repetitionsCopyright © 2021 Codeinu
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