add new solutions

solutions/7/q746/solution.go

@@ -0,0 +1,11 @@
+package q746
+
+func minCostClimbingStairs(cost []int) int {
+	minCost := make([]int, len(cost)+1)
+	for i := 2; i < len(minCost); i++ {
+		minCost[i] = min(minCost[i-2]+cost[i-2], minCost[i-1]+cost[i-1])
+	}
+	return minCost[len(minCost)-1]
+}
+
+var _ = minCostClimbingStairs