Gold Miner Solution¶
gold[locs[:, 0], locs[:, 1]]
# array([2, 6, 2, 8, 2])
Explanation¶
To access the gold at the first prospect location, we can do
gold[0, 4]
# 2
To access the gold at all five prospect locations, we can do
i = [0,2,2,5,6]
j = [4,2,3,1,3]
gold[i, j]
# array([2, 6, 2, 8, 2])
To build the i and j index arrays dynamically, we can do
i = locs[:, 0] # (1)!
j = locs[:, 1] # (2)!
- i represents the first column of
locs - j represents the second column of
locs
Putting it all together..
gold[locs[:, 0], locs[:, 1]]
# array([2, 6, 2, 8, 2])