cpp
复制代码
class Solution {
public:
int change(int amount, vector<int>& coins) {
vector<uint64_t> dp(amount + 1, 0);
dp[0] = 1;
for (int i = 0; i < coins.size(); i++) {
for (int j = coins[i]; j <= amount; j++) {
dp[j] += dp[j - coins[i]];
}
}
return dp[amount];
}
};
cpp
复制代码
class Solution {
public:
int combinationSum4(vector<int>& nums, int target) {
vector<uint64_t> dp(target + 1, 0);
dp[0] = 1;
for (int i = 0; i <= target; i++) {
for (int j = 0; j < nums.size(); j++) {
if (i >= nums[j]) {
dp[i] += dp[i - nums[j]];
}
}
}
return dp[target];
}
};