diff options
Diffstat (limited to 'other/combination_sum4.cpp')
-rw-r--r-- | other/combination_sum4.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/other/combination_sum4.cpp b/other/combination_sum4.cpp new file mode 100644 index 0000000..b05bc96 --- /dev/null +++ b/other/combination_sum4.cpp @@ -0,0 +1,24 @@ +#include "leetcode.h" + +class Solution { +public: + int combinationSum4(vector<int> &nums, int target) { + vector<unsigned int> dp(target + 1, 0); + dp[0] = 1; + for (int i = 0; i < target; i++) { + if (!dp[i]) + continue; + for (int num : nums) + if (num + i <= target) + dp[i + num] += dp[i]; + } + return dp[target]; + } +}; + +int main() { + Solution obj; + vector<int> nums = {1, 2, 3}; + int target = 4; + cout << obj.combinationSum4(nums, target); +} |