From 7c60dee83b436e8e8a667bf9f191beced8de4fc3 Mon Sep 17 00:00:00 2001 From: Jack Sangdahl Date: Mon, 10 Mar 2025 00:36:13 -0600 Subject: chore: move cpp and rust code to directory --- other/climbing_stairs.cpp | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 other/climbing_stairs.cpp (limited to 'other/climbing_stairs.cpp') diff --git a/other/climbing_stairs.cpp b/other/climbing_stairs.cpp new file mode 100644 index 0000000..afc3d7e --- /dev/null +++ b/other/climbing_stairs.cpp @@ -0,0 +1,31 @@ +#include "leetcode.h" + +class Solution { +public: + int climbStairs(int n) { + /* + * base case + * because if 0 steps -> 0 ways, + * 1 step -> 1 way, & 2 step -> 2 ways + */ + if (n <= 2) + return n; + /* + * last step was either: + * 1 step (oneStep) or 2 steps (twoStep) + * so simply add the two values (fibonacci sequence) + */ + int oneStep = 1, twoStep = 2, ans; + for (int i = 3; i <= n; i++) { // 0-2 steps already determined + ans = oneStep + twoStep; + oneStep = twoStep; + twoStep = ans; + } + return ans; + } +}; + +int main() { + Solution obj; + cout << obj.climbStairs(4); +} -- cgit v1.2.3