题目

来源：1137. 第 N 个泰波那契数 - 力扣（LeetCode） (leetcode-cn.com)

题目描述：

完整代码

public class SolutionTest {
    public static void main(String[] args){
        Solution slt = new Solution();
        System.out.println(slt.tribonacci(5));
    }
}


class Solution {
    public int tribonacci(int n) {
        if(n==0)
            return 0;
        if(n==1)
            return 1;
        if(n==2)
            return 1;

        int[] taibonaqie = new int[n+1];

        taibonaqie[0] = 0;
        taibonaqie[1] = 1;
        taibonaqie[2] = 1;

        for(int i = 3; i <= n; i++){
            taibonaqie[i] = taibonaqie[i-1]+taibonaqie[i-2]+taibonaqie[i-3];
        }

        return taibonaqie[n];
    }
}