[Check-IO] Common Words

[1] Problem: https://py.checkio.org/en/mission/common-words/     
[2] My solution 

def checkio(line1: str, line2: str) -> str:
    # your code here
    line1 = line1.split(',')
    line2 = line2.split(',')
    result = []
    
    for word in line1:
        if word in line2: result.append(word)
    
    return ",".join(sorted(result))

 

[3] Best solutions