Question

How to count frequency of each element in an array in Python

Answer 1

arr = [4, 1, 2, 8, 9, 5, 5, 1, 7, 8, 8]
frequency = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

for i in range(0, len(arr)):  
    frequency[arr[i]] += 1

for i in range(0, 10):  
    if (frequency[i]):
        print(i,  ": - " + str(frequency[i]), " times")

           
   
   
'''
run:

1 : - 2  times
2 : - 1  times
4 : - 1  times
5 : - 2  times
7 : - 1  times
8 : - 3  times
9 : - 1  times

'''

 

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