def example ( )"""return the sum of the elements in sequence "" len(stotal for in range( )loop from to - total + [jreturn total def example ( )"""return the sum of the elements with even index in sequence "" len(stotal for in range( )note the increment of total + [jreturn total def example ( )"""return the sum of the prefix sums of sequence "" len(stotal for in range( )loop from to - for in range( + )loop from to total + [kreturn total def example ( )"""return the sum of the prefix sums of sequence "" len(sprefix total for in range( )prefix + [jtotal +prefix return total def example (ab)assume that and have equal length """return the number of elements in equal to the sum of prefix sums in "" len(acount for in range( )loop from to - total for in range( )loop from to - for in range( + )loop from to total + [kif [ =totalcount + return count code fragment some sample algorithms for analysis