feat: Upload climbing-stairs(typescript)

Author: mike2ox

climbing-stairs/mike2ox.ts

@@ -0,0 +1,12 @@
+function climbStairs(n: number): number {
+  let result = 0;
+  let step1 = 1;
+  let step2 = 0;
+
+  for (let i = 0; i < n; i++) {
+    result = step1 + step2;
+    step2 = step1;
+    step1 = result;
+  }
+  return result;
+}