day1/exercise/gcd_another.py
author Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
Mon, 21 Jun 2010 03:40:59 -0400
branchscipy2010
changeset 417 caec361e3a86
parent 64 333092b68926
permissions -rw-r--r--
ENH: Added slides for FFT and basic signal processing, wherein we introduce some random number generation also. Misc. cleanup for tutorial.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
64
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
     1
def gcd(a, b):
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
     2
  if a - b == 0:
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
     3
    return b
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
     4
  if a > b:
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
     5
    return gcd(b, a-b)
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
     6
  else:
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
     7
    return gcd(b, b-a)
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
     8
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
     9
def lcm(a, b):
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
    10
    return (a * b) / gcd(a, b)
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
    11
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
    12
print lcm(21, 14)
333092b68926 Added quiz tex file and all exercise problems Madhu worked out.
Madhusudan.C.S <madhusudancs@gmail.com>
parents:
diff changeset
    13