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hello-algo/en/codes/go/chapter_greedy/coin_change_greedy_test.go
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Yudong Jin 2778a6f9c7 Translate all code to English (#1836)
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2025-12-31 07:44:52 +08:00

36 lines
1.2 KiB
Go

// 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) {
// Greedy algorithm: Can guarantee finding the global optimal solution
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("Minimum number of coins needed to make %d is %d\n", amt, res)
// Greedy algorithm: Cannot guarantee finding the global optimal solution
coins = []int{1, 20, 50}
amt = 60
res = coinChangeGreedy(coins, amt)
fmt.Printf("coins = %v, amt = %d\n", coins, amt)
fmt.Printf("Minimum number of coins needed to make %d is %d\n", amt, res)
fmt.Println("Actually the minimum number needed is 3, i.e., 20 + 20 + 20")
// Greedy algorithm: Cannot guarantee finding the global optimal solution
coins = []int{1, 49, 50}
amt = 98
res = coinChangeGreedy(coins, amt)
fmt.Printf("coins = %v, amt = %d\n", coins, amt)
fmt.Printf("Minimum number of coins needed to make %d is %d\n", amt, res)
fmt.Println("Actually the minimum number needed is 2, i.e., 49 + 49")
}