Test case 1
p0,p1,p2,p3,p4,p5,p6,p7,p8
9
p0,p1,p2,p3,p4
5

Test case 2
p0,p1,p2,p3,p4,p5,p6,p7,p8,p9,p8,p9
12
p0,p1,p2,p3,p4
5

Test case 3
d1,p1,d3,p3,d5,p5,d7,p7,,p9,,p9
12
,p1,,p3,
5

Test case 4
P0,P1,P2,P3,P4,P5,P6,P7
8
P3,P4,P5,P6,P7
5

Test case 5
P0,P1,P2,P3,P4,P5,P6,P7
8
P3,P4,P5,P6,P7
5

Test case 6
P0,P1,P2,P3,P4,P5,P6,P7,P8,P9,P8,P9
12
P3
1

Test case 7
expando:0=string
expando:8=lastelement
expando:length=9
expando:shift=function shift() { [native code] }

Test case 8
hello world
11
123,,,,,,,,p9
9

Test case 9
,,,,,,,100
8
2147483649

Test case 10
1,a1,O3,4,a4,O6,7,a7,O9,10,a10,O12,13,a13,O15,16,a16,O18,19
19
10,a1,a1,O3,a4,a4,O6,a7,a7,O9,a10,a10,O12,a13,a13,O15,a16,a16,O18,a19
20
10,a1,a1,O3,a4,a,b,a7,a7,O9,a10,a10,O12,a13,a13,O15,a16,a16,O18,a19
20
a4,O6
2
10,a1,a1,O3,a4,a,b,a7,b,a13,a10,O15,a16,a13,O18,a19
16
a7,a7,O9,a10,a10,O12
6
10,a1,a1,O3,a4,a,b,a7,b,a13,a10,b,c,a13,f,a16,a16,O18,O18
19
a10,O15
2

Test case 11
O0,a1,10,O3,a4
5
a1,10,O3,a4
4
20,a1,10,a4,a4
a1,10,a4,a4
10,40,a1,10,a4,a4
50,10,40,a1,a4,a4,O6
10,40,a1,a4,a4,O6
O0,a1,10,O3,a4
5
O0,a1,10,O3,a4
5
O0,a1,2,3,4
5
O0,a1,2,a1,O0
5
1,2,3,O0,a1,10