In this video, we solve LeetCode Problem 70: Climbing Stairs.
Problem:
You are climbing a staircase. It takes n steps to reach the top.
Each time you can climb 1 or 2 steps.
Find how many distinct ways you can reach the top.
We cover:
- Recursion approach
- Memoization (DP)
- Tabulation
- Space Optimization (O(1))
This is one of the most important Dynamic Programming problems for interviews.
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