human
Replace a character c1 with c2 and c2 with c1 in a string S | Python3 program to replace c1 with c2 and c2 with c1.
loop to traverse in the string.
check for c1 and replace.
check for c2 and replace.
Driver Code"
Solution in Python:

Can you provide a code to replace a character c1 with c2 and c2 with c1 in a string S and the other steps required?
assistant
#Here is code to replace a character c1 with c2 and c2 with c1 in a string S and the other steps required.
 def replace ( s , c1 , c2 ) :
	l = len ( s )
	for i in range ( l ) :
		if ( s [ i ] == c1 ) :
			s = s [ 0 : i ] + c2 + s [ i + 1 : ]
		elif ( s [ i ] == c2 ) :
			s = s [ 0 : i ] + c1 + s [ i + 1 : ]
	return s
if __name__ == ' _ _ main _ _ ' :
	s = " grrksfoegrrks "
	c1 = ' e '
	c2 = ' r '
	print ( replace ( s , c1 , c2 ) )