leetcode

leetcode/202.py

@@ -0,0 +1,13 @@
+class Solution:
+    def isHappy(self, n: int) -> bool:
+        s=str(n)
+        while not len(s)==1:
+            r=0
+            for i in range(len(s)):
+                r+=int(s[i])**2
+            s=str(r)
+        
+        if s=="1" or s=="7":
+            return True
+        else:
+            return False