518. Coin Change 2
You are given coins of different denominations and a total amount of money. Write a function to compute the number of combinations that make up that amount. You may assume that you have infinite number of each kind of coin.
Example 1:
Input: amount = 5, coins = [1, 2, 5]
Output: 4
Explanation: there are four ways to make up the amount:
5=5
5=2+2+1
5=2+1+1+1
5=1+1+1+1+1
Example 2:
Input: amount = 3, coins = [2]
Output: 0
Explanation: the amount of 3 cannot be made up just with coins of 2.
Example 3:
Input: amount = 10, coins = [10]
Output: 1
Note:
You can assume that
- 0 <= amount <= 5000
- 1 <= coin <= 5000
- the number of coins is less than 500
- the answer is guaranteed to fit into signed 32-bit integer
# @lc code=start
using LeetCode
function change(amount::Int, coins::Vector{Int})::Int
dp = fill(0, amount)
for coin in coins, x in coin:amount
dp[x] += (x == coin) ? 1 : dp[x - coin]
end
return dp[amount]
end
# @lc code=end
change (generic function with 1 method)
This page was generated using DemoCards.jl and Literate.jl.