Happy Number

Author: Pratul1997

202. Happy Number/README.md

@@ -0,0 +1,18 @@
+# Solution
+```
+class Solution:
+    def isHappy(self, n):
+        di = dict()
+        while True:
+            k = 0
+            while n > 0:
+                k += (n % 10) ** 2
+                n = n // 10
+            if k == 1:
+                return True
+            if k in di:
+                return False
+            else:
+                di[k] = 1
+            n = k
+```