Feat/earthquake anomaly python solution -> main

[alangnt]

Hi Codédex team,

This PR adds a working Python solution for today's Earthquake Anomaly 🌏 challenge, and updates the README.md file with today's GitHub link.

Here's the code :

def earthquake_anomaly(readings):
  # if no readings we simply return an empty array
  if not readings:
    return []

  # first we sort the readings
  sorted_readings = sorted(readings)
  n = len(sorted_readings)
  
  # find the median
  if n % 2 == 1:
    median = sorted_readings[n // 2]
  else:
    median = (sorted_readings[n // 2 - 1] + sorted_readings[n // 2]) / 2

  # now let's find the threshold
  threshold = median * 1.5

  return [i for i, thresh in enumerate(readings) if thresh > threshold]

And here's how it works :

• we sort a copy of the list to find the middle value(s), the original order is kept intact for indexing later
• if odd length the median is just the single middle element
• if even length, we average the two middle elements
• then we multiply by 1.5 to get the suspicion threshold
• and finally we loop with enumerate over the original list to collect the indices of any value that exceeds the threshold