[jeongyunjae] WEEK 02 solutions (#1755)

* [main] valid anagram solution

* [main] climbStairs solution

Author: jeongyunjae

climbing-stairs/jeongyunjae.py

@@ -0,0 +1,12 @@
+class Solution:
+    def climbStairs(self, n: int) -> int:
+        dp = [-1]
+
+        for i in range(1,n+1):
+            if i == 1 or i == 2:
+                dp.append(i)
+                continue
+
+            dp.append(dp[i-1] + dp[i-2])
+        
+        return dp[n]

valid-anagram/jeongyunjae.py

@@ -0,0 +1,6 @@
+class Solution:
+    def isAnagram(self, s: str, t: str) -> bool:
+        sort_s = ''.join(sorted(s))
+        sort_t = ''.join(sorted(t))
+
+        return sort_s == sort_t