CODE EXAMPLE FOR PYTHON

Program to find GCD or HCF of two numbers python

# function to return gcd of a and b
 
# Taking the matrix as globally
dp = [[-1 for i in range(1001)] for j in range(1001)]
 
def gcd(a,b):
     
    # Everything divides 0
    if (a == 0):
        return b
    if (b == 0):
        return a
 
    # base case
    if (a == b):
        return a
     
    if(dp[a][b] != -1):
        return dp[a][b]
         
    # a is greater
    if (a > b):
        dp[a][b] = gcd(a-b, b)
    else:
        dp[a][b] = gcd(a, b-a)
         
    return dp[a][b]
 
# Driver program to test above function
a = 98
b = 56
if(gcd(a, b)):
    print('GCD of', a, 'and', b, 'is', gcd(a, b))
else:
    print('not found')
 
# This code is contributed by Samim Hossain Mondal.