Recca Chao 的 gitHub page

推廣網站開發,包含 Laravel 和 Kotlin 後端撰寫、自動化測試、讀書心得等。Taiwan Kotlin User Group 管理員。

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Hi, here’s your problem today. This problem was recently asked by LinkedIn:

You are given a positive integer N which represents the number of steps in a staircase. You can either climb 1 or 2 steps at a time. Write a function that returns the number of unique ways to climb the stairs.

def staircase(n):
  # Fill this in.
print staircase(4)
# 5
print staircase(5)
# 8

Can you find a solution in O(n) time?