#### Exercícios propostos no [CodeCheck](https://horstmann.com/codecheck/index.html)
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## Ex 10.
def hms2sec(h, m, s):
sec = h * 3600 + m * 60 + s
return sec
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## Ex 11.
def sec2hms(sec):
h = sec // 3600
m = (sec // 60) % 60
s = sec % 60
return h, m, s