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Count binary strings of length same as given string after removal of substrings "01" and "00" that consists of at least one '1' | Function to count the strings consisting of at least 1 set bit.
Initialize count.
Iterate through string.
The answer is 2 ^ N - 1.
Driver Code.
Given string.
Function call"
Solution in Python:

What is a code to count binary strings of length same as given string after removal of substrings "01" and "00" that consists of at least one '1' and the other steps required?
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#Here is code to count binary strings of length same as given string after removal of substrings "01" and "00" that consists of at least one '1' and the other steps required.
 def countString ( S ) :
	count = 0
	for i in S :
		if ( i == '0' and count > 0 ) :
			count -= 1
		else :
			count += 1
	print ( ( 1 << count ) - 1 )
if __name__ == " _ _ main _ _ " :
	S = "1001"
	countString ( S )