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Minimum changes required such that the string satisfies the given condition | Function to return the minimum changes required.
To store the count of minimum changes , number of ones and the number of zeroes.
First character has to be '1.
If condition fails changes need to be made.
Return the required count.
Driver code"
Solution in Python:
 What is a code to minimum changes required such that the string satisfies the given condition and the other steps required?
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#Here is code to minimum changes required such that the string satisfies the given condition and the other steps required.
 def minChanges ( str , n ) :
	count , zeros , ones = 0 , 0 , 0
'
	if ( ord ( str [ 0 ] ) != ord ( '1' ) ) :
		count += 1
		ones += 1
	for i in range ( 1 , n ) :
		if ( ord ( str [ i ] ) == ord ( '0' ) ) :
			zeros += 1
		else :
			ones += 1
		if ( zeros > ones ) :
			zeros -= 1
			ones += 1
			count += 1
	return count
if __name__ == ' _ _ main _ _ ' :
	str = "0000"
	n = len ( str )
	print ( minChanges ( str , n ) )