From f937c697a49845985335dfc7f7a2e16910381c58 Mon Sep 17 00:00:00 2001
From: chenwj113 <chenwj113@gmail.com>
Date: Wed, 12 Oct 2022 16:54:26 +0800
Subject: [PATCH] add sd.py

---
 sd.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 sd.py

diff --git a/sd.py b/sd.py
new file mode 100644
index 0000000..9947fdb
--- /dev/null
+++ b/sd.py
@@ -0,0 +1,16 @@
+import numpy as np 
+import pandas as pd
+
+a = np.arange(1000)
+
+l = set([ f"{i:03d}" for i in a ])
+
+sum_dict = dict()
+print(len(l))
+for i in l:
+    _sum = sum(map(int, i))
+    v = sum_dict.get(_sum, 0)
+    sum_dict[_sum] = v + 1
+
+df = pd.Series(sum_dict)
+print(df.sort_values(ascending=False))
\ No newline at end of file