Question

Programming challenge description:

Write a program that, given two clock times, prints out the absolute number of minutes between them.

Input:

Your program should read lines from standard input. Each line contains two wall clock times separated by a hyphen. Wall clock time is defined as hh:mm followed by AM' or 'PM', e.g. '09:05 AM'

Output:

Print to standard output the number of minutes between the two times from standard input. Print out each result on a new line.

Test 1

Test Input

10:00 AM - 11:00 AM

Expected Output

60

Test 2

Test Input

1:00 PM - 11:00 AM

Expected Output

1320

Answer 1

i have created 2 function

1. to change 12 hour format to 24 hour format

2. to calculate minutes

1. python code

def convert24(str1):
''' this function converts 12 hour clock time to 24 hour clock time '''
   if str1[-2:] == "AM" and str1[:2] == "12":
       return "00" + str1[2:-2]
   elif str1[-2:] == "AM":
       return str1[:-2]
   elif str1[-2:] == "PM" and str1[:2] == "12":
       return str1[:-2]       
   else:
       return str(int(str1[:2]) + 12) + str1[2:-2]

def minute(x):
''' this function finds difference between 2 clock'''
  
#changing time to 24 hour format
first_clock=convert24(x[:7])
Second_clock=convert24(x[-7:])
  
#changing hour to minute
first_clock_minutes=int(first_clock[:2])*60+int(first_clock[-2:])
Second_clock_minutes=int(Second_clock[:2])*60+int(Second_clock[-2:])
  
#calculating minute differences
if first_clock_minutes > Second_clock_minutes:
return (24*60-first_clock_minutes+Second_clock_minutes)
  
return Second_clock_minutes-first_clock_minutes

print('enter the input in following form example')
print('10:00AM-11:00AM')
x=input('enter time whose difference u need to find\n')
print(minute(x))

sample screenshot