From 7b947e29960f6c50dc55a2676d938bea393ed60c Mon Sep 17 00:00:00 2001
From: aclist <null>
Date: Mon, 12 Sep 2022 19:35:50 +0900
Subject: [PATCH] Add helper file

---
 helpers/lat.py | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 helpers/lat.py

diff --git a/helpers/lat.py b/helpers/lat.py
new file mode 100644
index 0000000..ce2ef6d
--- /dev/null
+++ b/helpers/lat.py
@@ -0,0 +1,25 @@
+import math
+import sys
+ 
+def haversine(lat1, lon1, lat2, lon2):
+     
+    dLat = (lat2 - lat1) * math.pi / 180.0
+    dLon = (lon2 - lon1) * math.pi / 180.0
+ 
+    lat1 = (lat1) * math.pi / 180.0
+    lat2 = (lat2) * math.pi / 180.0
+ 
+    a = (pow(math.sin(dLat / 2), 2) +
+         pow(math.sin(dLon / 2), 2) *
+             math.cos(lat1) * math.cos(lat2));
+    rad = 6371
+    c = 2 * math.asin(math.sqrt(a))
+    return round(rad * c)
+ 
+if __name__ == "__main__":
+    lat1 = float(sys.argv[1])
+    lon1 = float(sys.argv[2])
+    lat2 = float(sys.argv[3])
+    lon2 = float(sys.argv[4])
+
+    print(haversine(lat1, lon1, lat2, lon2))