package question;

import java.util.Arrays;

/**
 * @author Roderland
 * @since 1.0
 */
public class Question377 {
 public int combinationSum4(int[] nums, int target) {
 Arrays.sort(nums);
 int[] dp = new int[target + 1];
 dp[0] = 1;
 for (int i = 1; i <= target; i++) {
 for (int num : nums) {
 if (num > i) break;
 dp[i] += dp[i - num];
 }
 }
 return dp[target];
 }
}