kt: add «2226. Maximum Candies Allocated to K Children»

URL:	https://leetcode.com/problems/maximum-candies-allocated-to-k-children/
Signed-off-by: Matej Focko <me@mfocko.xyz>

kt/maximum-candies-allocated-to-k-children.kt

@@ -0,0 +1,26 @@
+class Solution {
+    private fun canAllocate(
+        candies: IntArray,
+        k: Long,
+        count: Int,
+    ): Boolean =
+        candies.asSequence().sumOf { pile ->
+            pile / count.toLong()
+        } >= k
+
+    fun maximumCandies(
+        candies: IntArray,
+        k: Long,
+    ): Int {
+        var (left, right) = 0 to candies.max()!!
+        while (left < right) {
+            val mid = (left + right + 1) / 2
+            when {
+                canAllocate(candies, k, mid) -> left = mid
+                else -> right = mid - 1
+            }
+        }
+
+        return left
+    }
+}