def sorted():
print(numList)
sortedList=numList
sortedList.sort()
print(numList)
print(sortedList)
Result:
[4,1,9,16,25]
[1,4,9,16,25]
[1,4,9,16,25]
Actually, I just sort the "sortedList" only, but result shows it sorted numList too. may I know the reason and solution.
You need to make a copy of the list, otherwise it is a pointer to the list and will act on both things.
https://www.programiz.com/python-programming/methods/list/copy
Here's how copy works. You'll want to copy your numList into sortedList and then sort it.
Example:
lst = [0, 1, 2, 3]
lst2 = lst
lst2[0] = 4
lst
>>> [4, 1, 2, 3]
Versus
lst = [0, 1, 2, 3]
lst2 = lst.copy()
lst2[0] = 4
lst
>>> [0, 1, 2, 3]
