H-index

The task requires us to compute the influence factor of a researcher based on the number of citations their papers have received. The influence factor is defined as the maximum value of ( k ) such that there are at least ( k ) papers with at least ( k ) citations each.

initial

I tried with a dobule for loop to find the max value for h-index. But I was sure that could be a better way

solution

Here’s a step-by-step approach to solve this:

1. Sort the list of citation counts in descending order.
2. Iterate through the sorted list and find the highest value ( k ) where the number of papers with at least ( k ) citations is ( k ).

def calculate_influence_factor(citations):
    # Sort the list in descending order
    citations.sort(reverse=True)
    
    # Initialize the influence factor
    influence_factor = 0
    
    # Iterate through the sorted list
    for i in range(len(citations)):
        if citations[i] >= i + 1:
            influence_factor = i + 1
        else:
            break
            
    return influence_factor

# Test the function with the provided example
references = [3, 0, 4, 2, 8]
print(calculate_influence_factor(references))  # Output: 3

This function first sorts the citations list in descending order and then iterates through the sorted list to determine the maximum value of ( k ) that satisfies the given conditions.