ascending     : {bob=70, carol=85, alice=90, erin=95}
reversed()    : {erin=95, alice=90, carol=85, bob=70}
firstEntry()  : bob=70
lastEntry()   : erin=95
top2 (by pos) : [erin=95, alice=90]
after put via view (no longer sorted): {bob=70, carol=85, alice=90, erin=95, zed=60}
putLast/putFirst  : {carol=85, alice=90, erin=95, zed=60, bob=70}
TreeMap first : alice=90  reversed: {zed=60, erin=95, carol=85, bob=70, alice=90}
pollFirstEntry: carol=85 -> {alice=90, erin=95, zed=60, bob=70}