n -> [n^2...1]
3 -> [9,8,7,6,5,4,3,2,1]
_S^Q2
n -> [0, 0, 1, 0, 2, 0, 3, 0, ..., n, 0]
[[0, 0], [0, 1], [0, 2], [0, 3], [0, 4], [0, n]]
.nm+d[0)+0S
C
[0)
]0
+0S
Uh
.nm+d]0Uh
C*hQ]0Uh
,
.nm,d0Uh
C,*hQ]0Uh
.nm,dZUh
"Hello" -> ["Hello","elloH","lloHe","loHel","oHell"]
m.<QdU
m+>Qd<QdU
.<
n -> [0, -1, 2, -3, ..., n or -n]
-n
n
m?%d2_ddUh
.e*?%k2_1 1bS
0
.e*?%k2_1 1b}Z
.e
