Stair Climbing With 1-3 | Dataford Interview Questions

Calculate the total number of ways to climb n stairs if you can take 1, 2, or 3 stairs at a time.

Implement climb_stairs(n), which accepts a non-negative integer n and returns the number of distinct ordered sequences of steps that reach exactly stair n. Treat the empty sequence as one way to reach stair 0. Return the result as a Python integer.

Constraints

0 <= n <= 1000
Each move must be exactly 1, 2, or 3 stairs
Different step orders count as different ways
Return the exact count as a Python integer

Function Signature

def climb_stairs(n):

Your question is Stair Climbing With 1-3. Start with the requirements in the Question tab.

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Problem

Calculate the total number of ways to climb n stairs if you can take 1, 2, or 3 stairs at a time.

Constraints

0 <= n <= 1000
Each move must be exactly 1, 2, or 3 stairs
Different step orders count as different ways
Return the exact count as a Python integer

Function Signature

def climb_stairs(n):

Your question is Stair Climbing With 1-3. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.