duplicate in list python
a = [1,2,3,2,1,5,6,5,5,5]
import collections
print([item for item, count in collections.Counter(a).items() if count > 1])
## [1, 2, 5]duplicate in list python
a = [1,2,3,2,1,5,6,5,5,5]
import collections
print([item for item, count in collections.Counter(a).items() if count > 1])
## [1, 2, 5]program to print duplicates from a list of integers in python
lst = [ 3, 6, 9, 12, 3, 30, 15, 9, 45, 36, 12, 12]
dupItems = []
uniqItems = {}
for x in lst:
if x not in uniqItems:
uniqItems[x] = 1
else:
if uniqItems[x] == 1:
dupItems.append(x)
uniqItems[x] += 1
print(dupItems)Copyright © 2021 Codeinu
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