human
Write me a code to sum of all subsequences of a number and the other steps required given the following:
Sum of all subsequences of a number | Returns numeric value of a subsequence of s . The subsequence to be picked is decided using bit pattern of num ( We pick all thosedigits for which there is a set bit in num ).
Initialize the result.
till n != 0.
if i - th bit is set then add this number.
right shift i.
function to find combined sum of all individual subsequence sum.
length of string.
stores the combined.
2 ^ n - 1 subsequences.
loop for all subsequences.
returns the combined sum.
driver code"
How can the above be solved in Python?
assistant
#Here is code to sum of all subsequences of a number and the other steps required.
 def findSubSequence ( s , num ) :
	res = 0
	i = 0
	while ( num ) :
		if ( num & 1 ) :
			res += ord ( s [ i ] ) - ord ( '0' )
		i += 1
		num = num >> 1
	return res
def combinedSum ( s ) :
	n = len ( s )
	c_sum = 0
	ran = ( 1 << n ) - 1
	for i in range ( ran + 1 ) :
		c_sum += findSubSequence ( s , i )
	return c_sum
if __name__ == " _ _ main _ _ " :
	s = "123"
	print ( combinedSum ( s ) )