How to count how many times each element occurs in an array?

Question

lets say we have this array:

Sample_array = [1,2,4,4,5,1,2,4]

and we want to know how many times each element occurs in this array, without using numpy what is the easiest and simplest way to do it?

so it would be like this? for x in Sample_array: Sample_array.count(x) ?? — exyts usiot, Dec 14 '20 at 03:52
yes, you may also use `dit = {x:lst.count(x) for x in lst}` this will give the count of each element in the form of dictionary — JacksonPro, Dec 14 '20 at 03:53

score 1 · Answer 1 · answered Dec 14 '20 at 03:54

You can use an internal python library named Counter like below:


from collections import Counter                                                                                                                        

Counter(Sample_array)                                                                                                                                  
Counter({1: 2, 2: 2, 4: 3, 5: 1})

How to count how many times each element occurs in an array?

1 Answers1