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Range sum in 3-Dimension
In 1-D we can find sum in range [l, r] using sum[r] - sum[l - 1].
In 2-D we can find sum in range from (x1, y1) to (x2, y2) using sum[x2][y2] - sum[x2][y1] - sum[x1][y2] + sum[x1][y1] where sum[] or sum[][] is cumulative sum .
How to find sum in range from (x1, y1, z1) to (x2, y2, z2) in a similar way ?
| Rev. | Язык | Кто | Когда | Δ | Комментарий | |
|---|---|---|---|---|---|---|
| en12 |
|
3_Problems_Everyday | 2017-07-08 20:11:36 | 0 | (published) | |
| en11 |
|
3_Problems_Everyday | 2017-07-08 20:10:02 | 5 | Tiny change: ' in range $ (x1,y1' -> ' in range from $ (x1,y1' | |
| en10 |
|
3_Problems_Everyday | 2017-07-08 20:09:06 | 15 | ||
| en9 |
|
3_Problems_Everyday | 2017-07-08 20:07:31 | 24 | ||
| en8 |
|
3_Problems_Everyday | 2017-07-08 20:06:25 | 5 | ||
| en7 |
|
3_Problems_Everyday | 2017-07-08 20:04:33 | 5 | ||
| en6 |
|
3_Problems_Everyday | 2017-07-08 20:00:05 | 4 | Tiny change: 'sum[l-1] \n\nIn 2-D w' -> 'sum[l-1] \\\nIn 2-D w' | |
| en5 |
|
3_Problems_Everyday | 2017-07-08 19:57:17 | 18 | ||
| en4 |
|
3_Problems_Everyday | 2017-07-08 19:56:42 | 6 | ||
| en3 |
|
3_Problems_Everyday | 2017-07-08 19:55:36 | 11 | Tiny change: '-sum[l-1] \newline\nIn 2-D w' -> '-sum[l-1] <\br>\nIn 2-D w' | |
| en2 |
|
3_Problems_Everyday | 2017-07-08 19:52:23 | 18 | ||
| en1 |
|
3_Problems_Everyday | 2017-07-08 19:51:38 | 313 | Initial revision (saved to drafts) |
