20201130

20201130/main.go

@@ -0,0 +1,24 @@
+package main
+
+import "fmt"
+
+var prices = []int{6, 8, 12, 14, 18, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44}
+var pricesWithAll = []int{6, 8, 12, 12, 12, 12, 12, 14, 14, 18, 22, 22, 22, 24, 24, 26, 26, 26, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44}
+
+func main() {
+	fmt.Println(sumCoins(50, prices))
+	fmt.Println(sumCoins(100, prices))
+	fmt.Println("paid = 50", sumCoins(50, pricesWithAll))
+	fmt.Println("paid = 100", sumCoins(100, pricesWithAll))
+}
+
+func sumCoins(target int, prices []int) int {
+	t := make([]int, target+1)
+	t[0] = 1
+	for _, c := range prices {
+		for j := c; j <= target; j++ {
+			t[j] += t[j-c]
+		}
+	}
+	return t[target]
+}