import time
from machine import Pin
leds = []
for i in range(10):
    leds.append(Pin(i,Pin.OUT))
    leds[i].value(0)

def hamming_distance(str1,str2):
    dist = 0
    if len(str1)!=len(str2):
        print("Error! The strings must have to be of the same length")
        return dist
    for a,b in zip(str1,str2):
        if a!=b:
            dist+=1
    return dist

while True:
    s1 = input("Enter String 1 :")
    s2 = input("Enter String 2 :")
    distance = hamming_distance(s1,s2)
    print(f"The hamming distance between the two strings is {distance}")
    for i in range(distance):
        leds[i].value(1)
    time.sleep(5)
    for i in range(distance):
        leds[i].value(0)