human
Give me a code to find the number of binary strings of length N with at least 3 consecutive 1 s and the other steps required given the following:
Find the number of binary strings of length N with at least 3 consecutive 1 s | Function that returns true if s contains three consecutive 1 's.
Function to return the count of required strings.
Driver code"
Solution in Python:
assistant
#Here is code to find the number of binary strings of length N with at least 3 consecutive 1 s and the other steps required.
 def check ( s ) :
	n = len ( s ) ;
	for i in range ( 2 , n ) :
		if ( s [ i ] == '1' and s [ i - 1 ] == '1' and s [ i - 2 ] == '1' ) :
			return 1 ;
def countStr ( i , s ) :
	if ( i < 0 ) :
		if ( check ( s ) ) :
			return 1 ;
		return 0 ;
	s [ i ] = '0' ;
	ans = countStr ( i - 1 , s ) ;
	s [ i ] = '1' ;
	ans += countStr ( i - 1 , s ) ;
	s [ i ] = '0' ;
	return ans ;
if __name__ == " _ _ main _ _ " :
	N = 4 ;
	s = list ( '0' * N ) ;
	print ( countStr ( N - 1 , s ) ) ;