Merge pull request #2010 from thuanle123/0256-paint-house

create 0256-paint-house-csharp

Author: tahsintunan

csharp/0256-paint-house.cs

@@ -0,0 +1,17 @@
+class Solution
+{
+    public int MinCost(int[][] costs)
+    {
+        int[] previousRow = new int[3];
+        for (int i = 0; i < costs.Length; i++)
+        {
+            int currentRowHouse0 = costs[i][0] + Math.Min(previousRow[1], previousRow[2]);
+            int currentRowHouse1 = costs[i][1] + Math.Min(previousRow[0], previousRow[2]);
+            int currentRowHouse2 = costs[i][2] + Math.Min(previousRow[0], previousRow[1]);
+            previousRow[0] = currentRowHouse0;
+            previousRow[1] = currentRowHouse1;
+            previousRow[2] = currentRowHouse2;
+        }
+        return Math.Min(Math.Min(previousRow[0], previousRow[1]), previousRow[2]);
+    }
+}