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0P3ち確オ巻 2F1P2ち確オ巻 1C
 

   y=: 'worlds on worlds '
   (<;.2 y) ; ($;._2 y) ; (3 5$i.10) ; (+/ ;.1 (3 5$i.10))
+---------------------+-+---------+-----------+
|+-------+---+-------+|6|0 1 2 3 4|5 7 9 11 13|
||worlds |on |worlds ||2|5 6 7 8 9|0 1 2  3  4|
|+-------+---+-------+|6|0 1 2 3 4|           |
+---------------------+-+---------+-----------+

   1 0 1 0 0 <;.1 i.5 7
+--------------------+
|0 1 2  3  4  5  6   |
|7 8 9 10 11 12 13   |
+--------------------+
|14 15 16 17 18 19 20|
|21 22 23 24 25 26 27|
|28 29 30 31 32 33 34|
+--------------------+
   ('';1 0 0 0 1 0 1) <;.1 i.5 7
+-----------+-----+--+
| 0  1  2  3| 4  5| 6|
| 7  8  9 10|11 12|13|
|14 15 16 17|18 19|20|
|21 22 23 24|25 26|27|
|28 29 30 31|32 33|34|
+-----------+-----+--+
   (1 0 1 0 0;1 0 0 0 1 0 1) <;.1 i.5 7
+-----------+-----+--+
|0 1 2  3   | 4  5| 6|
|7 8 9 10   |11 12|13|
+-----------+-----+--+
|14 15 16 17|18 19|20|
|21 22 23 24|25 26|27|
|28 29 30 31|32 33|34|
+-----------+-----+--+

   x=:1 _2,:_2 3 [ z=: i. 5 5
   x ; (x ];.0 z) ; z
+-----+--------+--------------+
| 1 _2|11 12 13| 0  1  2  3  4|
|_2  3| 6  7  8| 5  6  7  8  9|
|     |        |10 11 12 13 14|
|     |        |15 16 17 18 19|
|     |        |20 21 22 23 24|
+-----+--------+--------------+

   (y=: a. {~ (a. i. 'a') + i. 4 4);(a=: 1 1 ,: 2 2)
+----+---+
|abcd|1 1|
|efgh|2 2|
|ijkl|   |
|mnop|   |
+----+---+

   (<;.3 y) ; ((($$y)$<./$y)<;.3 y) ; (a <;.3 y) ; <(a <;._3 y)
+---------------+---------------+------------+----------+
|+----+---+--+-+|+----+---+--+-+|+--+--+--+-+|+--+--+--+|
||abcd|bcd|cd|d|||abcd|bcd|cd|d|||ab|bc|cd|d|||ab|bc|cd||
||efgh|fgh|gh|h|||efgh|fgh|gh|h|||ef|fg|gh|h|||ef|fg|gh||
||ijkl|jkl|kl|l|||ijkl|jkl|kl|l||+--+--+--+-+|+--+--+--+|
||mnop|nop|op|p|||mnop|nop|op|p|||ef|fg|gh|h|||ef|fg|gh||
|+----+---+--+-+|+----+---+--+-+||ij|jk|kl|l|||ij|jk|kl||
||efgh|fgh|gh|h|||efgh|fgh|gh|h||+--+--+--+-+|+--+--+--+|
||ijkl|jkl|kl|l|||ijkl|jkl|kl|l|||ij|jk|kl|l|||ij|jk|kl||
||mnop|nop|op|p|||mnop|nop|op|p|||mn|no|op|p|||mn|no|op||
|+----+---+--+-+|+----+---+--+-+|+--+--+--+-+|+--+--+--+|
||ijkl|jkl|kl|l|||ijkl|jkl|kl|l|||mn|no|op|p||          |
||mnop|nop|op|p|||mnop|nop|op|p||+--+--+--+-+|          |
|+----+---+--+-+|+----+---+--+-+|            |          |
||mnop|nop|op|p|||mnop|nop|op|p||            |          |
|+----+---+--+-+|+----+---+--+-+|            |          |
+---------------+---------------+------------+----------+

UerJD随恰