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29 lines
558 B
Python
29 lines
558 B
Python
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"""
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File: climbing_stairs_dfs.py
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Created Time: 2023-06-30
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Author: krahets (krahets@163.com)
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"""
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def dfs(i: int) -> int:
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"""Search"""
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# Known dp[1] and dp[2], return them
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if i == 1 or i == 2:
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return i
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# dp[i] = dp[i-1] + dp[i-2]
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count = dfs(i - 1) + dfs(i - 2)
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return count
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def climbing_stairs_dfs(n: int) -> int:
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"""Climbing stairs: Search"""
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return dfs(n)
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"""Driver Code"""
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if __name__ == "__main__":
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n = 9
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res = climbing_stairs_dfs(n)
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print(f"Climb {n} steps, there are {res} solutions in total")
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