So I’m trying to make a program that tells the user how many numbers both inputted numbers have in common

FOR EXAMPLE:
if inputted n1 = 765 and n2 = 572 then the program returns 2 because both numbers have 7 and 5 in them.

I made this but it isn’t working:

p = []
i = []
counter = [0] * 10
answer = 0
def conv(a):
p = [list(map(int, a))]
return p
def fed(a):
i = [list(map(int, a))]
return i
while True:
n = str(input("Enter the first number :"))
conv(n)
v = str(input("Enter the second number: " ))
fed(v)
counter = [0] * 10
answer = 0
for x in p:
counter[x] += 1
for x in i:
if counter[x] > 0:
counter[x] -= 1
answer += 1
print(answer)```

## Answer

Use list comprehension and sets instead, like so:

while True:
nums = []
nums.append(input('Enter first number: '))
nums.append(input('Enter second number: '))
digits = [set(x) for x in nums]
num_comm = len(digits[0] & digits[1])
print(num_comm)

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