This is how I got it.
def sec2time[sec, n_msec=3]:
''' Convert seconds to 'D days, HH:MM:SS.FFF' '''
if hasattr[sec,'__len__']:
return [sec2time[s] for s in sec]
m, s = divmod[sec, 60]
h, m = divmod[m, 60]
d, h = divmod[h, 24]
if n_msec > 0:
pattern = '%%02d:%%02d:%%0%d.%df' % [n_msec+3, n_msec]
else:
pattern = r'%02d:%02d:%02d'
if d == 0:
return pattern % [h, m, s]
return ['%d days, ' + pattern] % [d, h, m, s]
Some examples:
$ sec2time[10, 3]
Out: '00:00:10.000'
$ sec2time[1234567.8910, 0]
Out: '14 days, 06:56:07'
$ sec2time[1234567.8910, 4]
Out: '14 days, 06:56:07.8910'
$ sec2time[[12, 345678.9], 3]
Out: ['00:00:12.000', '4 days, 00:01:18.900']
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Given an integer n [in seconds], convert it into hours, minutes and seconds. Examples:
Input : 12345 Output : 3:25:45 Input : 3600 Output : 1:00:00
Approach #1 : Naive This approach is simply a naive approach to get the hours, minutes and seconds by simple mathematical calculations.
Python3
def convert[seconds]:
seconds = seconds % [24 * 3600]
hour = seconds // 3600
seconds %= 3600
minutes = seconds // 60
seconds %=
60
return "%d:%02d:%02d" % [hour, minutes, seconds]
n = 12345
print[convert[n]]
Time Complexity: O[1]
Auxiliary Space: O[1]
Approach #2 : Alternate to the Naive approach By using the divmod[] function, which does only a single division to produce both the quotient and the remainder, you can have the result very quickly with only two mathematical operations.
Python3
def convert[seconds]:
min, sec = divmod[seconds, 60]
hour, min = divmod[min, 60]
return '%d:%02d:%02d' % [hour, min, sec]
n = 12345
print[convert[n]]
Time Complexity: O[1]
Auxiliary Space: O[1]
Approach #3 : Using timedelta [Object of datetime module] Datetime module provides timedelta object which represents a duration, the difference between two dates or times. datetime.timedelta can be used to represent seconds into hours, minutes and seconds format.
Python3
import datetime
def convert[n]:
return str[datetime.timedelta[seconds = n]]
n = 12345
print[convert[n]]
Time Complexity:
O[1]
Auxiliary Space: O[1]
Approach #4 : Using time.strftime[] time.strftime[] gives more control over formatting. The format and time.gmtime[] is passed as argument. gmtime is used to convert seconds to special tuple format that strftime[] requires.
Python3
import time
def convert[seconds]:
return time.strftime["%H:%M:%S", time.gmtime[n]]
n =
12345
print[convert[n]]
Time Complexity: O[1]
Auxiliary Space: O[1]