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Mahmoud EL-kariouny

Posted on

# Python challenge_13

## Consecutive zeros

The goal of this challenge is to analyze a binary string consisting of
only zeros and ones.

Your code should find the biggest number of consecutive zeros in the string.

### For example:

given the string "1001101000110" The biggest number of consecutive zeros is 3.

Define a function named consecutive_zeros that takes a single parameter,
which is the string of zeros and ones.

Your function should return the number described above.
All the best to you.

#### My Solution

``````def consecutive_zeros(binary_string):
binary_list = binary_string.split('1') # ['', '00', '', '0', '000', '', '0']
biggest_number = max(map(len, binary_list))
return biggest_number
print(consecutive_zeros("1001101000110"))

``````

#### Aother solution

``````def consecutive_zeros(bin_str):
result = 0
streak = 0
for letter in bin_str:
if letter == "0":
streak += 1
else:
streak = 0
result = max(result, streak)
return result
``````

#### shorter solution

``````def consecutive_zeros(bin_str):
return max([len(string) for string in bin_str.split("1")])
``````

All the best to you.