status 20110708(c)

Put some deep thought on the exercises in Section 12.1 and 12.2, they are actually not as difficult as I thought.  I demand myself to figure out the "elegant" solution of 12.1-3. I found a good one but it's not necessarily elegant.  Another key question I solved is 12.2-6, it is key because it helps run to understand why TREE-SUCCESSOR works.

Also solved the trivial 12.1-1

Browse reading: 485/1144
Exercises up to 4-3.1

Revisit : 4.2-{3-5}

Checking up to P2.1

Needs write up: 2-3.7 (cute solution using merging) P2.1c, 3-2.4, 3-2.8, P3.1

Exercises checked: 2.1-2, 2.1-3, 2.2-{1,4}, 2.3-{3,7}

Exercises which are finished but not on paper: 1.1-2, 1.2-2, 1.2-3, P1-1, 4.2-6, 4.2-7, 4.3-{1,2,4,5,6}, The whole Section 4.4, 4.5-1, P4.4(a-c), P4.6b, 5.1-{1,2}, whole Section 6.1, 6.2-{1,2,4,5,6}, 6.3-1, whole Section 7.1, 7.2-{1-3}, whole Section 7.3 and 7.4.3, 10.1-6, 10.1-7, 12.1-{1,2,3,4} 12.2-{1,2,3,6}, 12.4-4, P12.4(a), 15-1.1, 15.1-3, 15.3-3, 15.5, 17-1.1, A.1-{1,2,3,4,5,7},  C.1-{2,4,5,7,8,9,14}, C.2-{1,2,4,5}, C.3-{1,2,10}, all in D.1. and D.2-2.