// File: coin_change_greedy_test.go // Created Time: 2023-07-23 // Author: Reanon (793584285@qq.com) package chapter_greedy import ( "fmt" "testing" ) func TestCoinChangeGreedy(t *testing.T) { // 貪婪:能夠保證找到全域性最優解 coins := []int{1, 5, 10, 20, 50, 100} amt := 186 res := coinChangeGreedy(coins, amt) fmt.Printf("coins = %v, amt = %d\n", coins, amt) fmt.Printf("湊到 %d 所需的最少硬幣數量為 %d\n", amt, res) // 貪婪:無法保證找到全域性最優解 coins = []int{1, 20, 50} amt = 60 res = coinChangeGreedy(coins, amt) fmt.Printf("coins = %v, amt = %d\n", coins, amt) fmt.Printf("湊到 %d 所需的最少硬幣數量為 %d\n", amt, res) fmt.Println("實際上需要的最少數量為 3 ,即 20 + 20 + 20") // 貪婪:無法保證找到全域性最優解 coins = []int{1, 49, 50} amt = 98 res = coinChangeGreedy(coins, amt) fmt.Printf("coins = %v, amt = %d\n", coins, amt) fmt.Printf("湊到 %d 所需的最少硬幣數量為 %d\n", amt, res) fmt.Println("實際上需要的最少數量為 2 ,即 49 + 49") }