CODEWITHSUNDEEP
python-3.xlistdata-structures
sizo_abe
sizo_abe

Reputation: 501

add unique values to duplicate list values in python

I have one list which contains duplicate values. I want to keep duplicates values by adding a char 'v1' or v2.. so on. The counter will increase if the particular number is repeated as many times

mk = ['1','1','2','3','2','4','4','4','5']

The output will look like this.

['1','1_v1','2','2_v1','3','4','4_v1','4_v2','5']

Upvotes: 1

Views: 335

Answers (1)

Seemant Singh
Seemant Singh

Reputation: 180

Create a dictionary to maintain the frequency of occurrence of elements and then use the dictionary to append values to the elements.

mk = ['1','1','2','3','2','4','4','4','5']
my_dict = {key:0 for key in mk}
for i in range(len(mk)):
  my_dict[mk[i]] += 1 #increase the occurrence count
  if my_dict[mk[i]] > 1: #check if the element occurred more than once
      mk[i] = mk[i]+"_v"+str(my_dict[mk[i]] - 1) #if yes append the value

Upvotes: 1

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