import time
time.sleep(0.1) # Wait for USB to become ready

print("Hello, Pi Pico!")

from machine import Pin
import utime


LED_BAR_PINS = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]  
NUM_LEDS = len(LED_BAR_PINS)


led_bar = [Pin(pin, Pin.OUT) for pin in LED_BAR_PINS]


def hamming_distance(char1, char2):
    
    binary_str1 = '{0:08b}'.format(ord(char1))
    binary_str2 = '{0:08b}'.format(ord(char2))
    
    
    distance = sum(bit1 != bit2 for bit1, bit2 in zip(binary_str1, binary_str2))
    print(distance)
    return distance


def light_up_led_bar(hamming_dist):
    for i in range(NUM_LEDS):
        if i < hamming_dist:
            led_bar[i].value(1)  
        else:
            led_bar[i].value(0)  


string1 = "Narayan"
string2 = "Nidumol"

for char1, char2 in zip(string1, string2):
    
    hamming_dist = hamming_distance(char1, char2)
    
    light_up_led_bar(hamming_dist)
    
    utime.sleep(1)


for led in led_bar:
    led.value(0)