Syntax error Program to check same value and frequency element is there or not in Python

Program to check same value and frequency element is there or not in Python

Suppose we have a list of numbers called nums, we have to check whether there is an element whose frequency is same as its value.

So, if the input is like nums = [2,5,7,5,3,5,3,5,9,9,5], then the output will be True, because 5 appears 5 times.

To solve this, we will follow these steps −

  • nums_c := a list containing frequencies of each elements present in nums

  • for each value i and frequency j in nums_c, do

    • if i is same as j, then

      • return True

  • return False

Example

Let us see the following implementation to get better understanding

from collections import Counter
def solve(nums):
   nums_c = Counter(nums)
   for i, j in nums_c.items():
      if i == j:
         return True
   return False

nums = [2,5,7,5,3,5,3,5,9,9,5]
print(solve(nums))

Input

[2,5,7,5,3,5,3,5,9,9,5]

Output

True
Updated on: 2021-10-11T07:12:26+05:30

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