subtree(users/wpcarro): docking briefcase at '24f5a642' r/3226

git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c09813172c79820bcf526bb10cf4208
git-subtree-split: 24f5a642af3aa1627bbff977f0a101907a02c69f
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789

1 files changed, 46 insertions, 0 deletions

diff --git a/users/wpcarro/scratch/facebook/camping-knapsack.py b/users/wpcarro/scratch/facebook/camping-knapsack.py
new file mode 100644
index 000000000000..add59ed409cd
--- /dev/null
+++ b/users/wpcarro/scratch/facebook/camping-knapsack.py
@@ -0,0 +1,46 @@
+from utils import get, init_table, print_table
+
+def max_haul(capacity, items, names):
+    table = init_table(rows=len(items), cols=capacity, default=0)
+    items_table = init_table(rows=len(items), cols=capacity, default=[])
+    for row in range(len(table)):
+        for col in range(len(table[row])):
+            kg, value = items[row]
+            curr_capacity = col + 1
+
+            if kg > curr_capacity:
+                a = 0
+            else:
+                a = value + get(table, row - 1, curr_capacity - kg - 1)
+            b = get(table, row - 1, col)
+
+            if a > b:
+                rest = get(items_table, row - 1, curr_capacity - kg - 1)
+                knapsack = [names.get(items[row])]
+                if rest:
+                    knapsack += rest
+            else:
+                knapsack = get(items_table, row - 1, col)
+
+            table[row][col] = max([a, b])
+            items_table[row][col] = knapsack
+        print_table(table)
+    return items_table[-1][-1]
+
+water = (3, 10)
+book = (1, 3)
+food = (2, 9)
+jacket = (2, 5)
+camera = (1, 6)
+items = [water, book, food, jacket, camera]
+result = max_haul(6, items, {
+    water: 'water',
+    book: 'book',
+    food: 'food',
+    jacket: 'jacket',
+    camera: 'camera',
+})
+expected = ['camera', 'food', 'water']
+print(result, expected)
+assert result == expected
+print("Success!")