add koko eating bananas

Author: LEUNGUU

Diff for: src/koko_eating_bananas.py

@@ -0,0 +1,21 @@
+from typing import List
+import math
+
+
+class Solution:
+    def minEatingSpeed(self, piles: List[int], h: int) -> int:
+        left, right = 1, max(piles)
+        res = right
+
+        while left <= right:
+            k = (left + right) // 2
+            hours = 0
+            for p in piles:
+                hours += math.ceil(p / k)
+
+            if hours <= h:
+                res = min(res, k)
+                right = k - 1
+            else:
+                left = k + 1
+        return res

Diff for: tests/test_koko_eating_bananas.py

@@ -0,0 +1,12 @@
+from koko_eating_bananas import Solution
+
+
+testcase = [{"testcase": [3, 6, 7, 11], "h": 8, "result": 4}]
+
+
+def test_koko_eating_bananas():
+    for tc in testcase:
+        piles = tc["testcase"]
+        h = tc["h"]
+        ans = Solution().minEatingSpeed(piles, h)
+        assert ans == tc["result"]