Z
LEX
COUNT
Initial
Play 1
Play 2
Play 3
Play 4
ZLEXCOUNT key min max
ZLEXCOUNT city
- +
ZLEXCOUNT city "
[
New York"
+
ZLEXCOUNT city "
(
New York"
+
ZLEXCOUNT city "
(
New York" "
(
Tokyo"
city
0
Beijing
0
New York
0
Seoul
0
Tokyo
INDEX
REVERSE
INDEX
0
1
2
3
-4
-3
-2
-1