添加0746使用最小花费爬楼梯C#版本

problems/0746.使用最小花费爬楼梯.md

@@ -370,5 +370,26 @@ object Solution {
 }
 ```
 
+### C#
+
+```c#
+public class Solution
+{
+    public int MinCostClimbingStairs(int[] cost)
+    {
+        int[] dp=new int[2] { cost[0], cost[1] };
+        for (int i = 2; i < cost.Length; i++)
+        {
+            int temp = Math.Min(dp[0], dp[1])+cost[i];
+            dp[0]=dp[1];
+            dp[1]=temp;
+        }
+        return Math.Min(dp[0],dp[1]);
+    }
+}
+```
+
+
+
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