augment running time analysis in solution to Exercise 10.1-6.

Modified are the following 2 files:

	10.1-6.pdf
	10.1-6.tm

Thank you!
							Lawrence X. Amlord
							  May 18th, 2014
							  Xi'an, China
add solution to Exercise 10.1-7.

Included are the following 2 files:

	10.1-7.pdf
	10.1-7.tm

Thank you!
							Lawrence X. Amlord
							  May 18th, 2014
							  Xi'an, China