23. Coin Change
Given coin denominations and an amount, return the minimum number of coins needed, or -1 if the amount cannot be formed.
Contoh 1:
Input: coins = [1,2,5], amount = 11 Output: 3
Contoh 2:
Input: coins = [2], amount = 3 Output: -1
Batasan:
1 <= coins.length <= 120 <= amount <= 10^4