Python/dynamic_programming/tribonacci.py
Ajinkya Chikhale 02d89bde67
Added implementation for Tribonacci sequence using dp (#6356)
* Added implementation for Tribonacci sequence using dp

* Updated parameter name

* Apply suggestions from code review

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Co-authored-by: Tianyi Zheng <tianyizheng02@gmail.com>
2023-08-14 00:12:42 -07:00

25 lines
452 B
Python

# Tribonacci sequence using Dynamic Programming
def tribonacci(num: int) -> list[int]:
"""
Given a number, return first n Tribonacci Numbers.
>>> tribonacci(5)
[0, 0, 1, 1, 2]
>>> tribonacci(8)
[0, 0, 1, 1, 2, 4, 7, 13]
"""
dp = [0] * num
dp[2] = 1
for i in range(3, num):
dp[i] = dp[i - 1] + dp[i - 2] + dp[i - 3]
return dp
if __name__ == "__main__":
import doctest
doctest.testmod()