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First solution in Clear category for Common Words by Lachesis_132296
def checkio(first, second):
t1 = []
t2 = []
similar = []
for i in first.split(','):
t1.append(i)
for i in second.split(','):
t2.append(i)
for i in t1:
if i in t2:
similar.append(i)
similar.sort()
result = ""
for i in similar:
result = result + i + ","
result = result[:len(result)-1]
return result
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
assert checkio("hello,world", "hello,earth") == "hello", "Hello"
assert checkio("one,two,three", "four,five,six") == "", "Too different"
assert checkio("one,two,three", "four,five,one,two,six,three") == "one,three,two", "1 2 3"
Nov. 20, 2016