Personal Study of solving algorithm problems using Swift
Find the number of number two from 0 to N
Example: for 25, output is 9
(02, 12, 20, 21, 22, 23, 24, 25)
The integer matrix representing a plot of land and water. Values of 0 represents water, while numbers > 0 represent land. A pond is a region of water connected vertically, horizontally or diagonally. The size of the pond is the number of connected water cells.
Compute the sizes of all ponts in the matrix.
Ex:
0 2 1 0
0 1 0 1
1 1 0 1
0 1 0 1
Output: 2, 4, 1 (in any order)