bitwise and Ehtesh

gistfile1.py

# allowed operators:
# - recursion
# - shift
# - add
# - mul
# - div
# - mod
def bitwise_and_1(a, b):
    result = 0
    index = 0
    while a > 0 and b > 0:
        r = int((a % 2) == (b % 2) == 1)
        result += r << index
        a = a >> 1
        b = b >> 1
        index += 1
    return result

print(bitwise_and_1(127,127))
#bitwise_and(127,127)