update project structure

leetcode_py/202.py

@@ -0,0 +1,26 @@
+# Happy Number
+# Repeat the process until the number equal to 1, these are happy
+# OR LOOP ENDLESS in a cycle, these are not happy
+
+
+class Solution:
+    def isHappy(self, n: int, status=None) -> bool:
+        if status is None:
+            status = []
+
+        str_n = str(n)
+        total = 0
+        for number in str_n:
+            total += int(number) ** 2
+        if total == 1:
+            return True
+        if str(total) in status:
+            return False
+
+        status.append(str(total))
+        return self.isHappy(total, status)
+
+
+if __name__ == "__main__":
+    number = 13
+    print(Solution().isHappy(number))