From 3b519f99863d2afb087ca232040d5151ba0fd501 Mon Sep 17 00:00:00 2001
From: Sergiy Goloviatinski <sergiy.golov@hotmail.com>
Date: Sun, 6 Oct 2019 16:03:52 +0200
Subject: [PATCH 1/2] Solved #36

---
 python/intermediate/valid-parenthesis_sg.py | 36 +++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100755 python/intermediate/valid-parenthesis_sg.py

diff --git a/python/intermediate/valid-parenthesis_sg.py b/python/intermediate/valid-parenthesis_sg.py
new file mode 100755
index 0000000..0024b68
--- /dev/null
+++ b/python/intermediate/valid-parenthesis_sg.py
@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+
+def has_valid_parens(s):
+    if len(s) == 0:
+        return True
+
+    # maps closing brackets to their opening equivalent
+    close_open_parens = {
+        ')': '(',
+        ']': '[',
+        '}': '{'
+    }
+
+    stack = []
+
+    for c in s:
+        if c in close_open_parens.values():  # opening brackets
+            stack.append(c)
+        if c in close_open_parens.keys():  # closing brackets
+            if close_open_parens[c] != stack[-1]:
+                return False
+            else:
+                stack.pop()
+
+    return len(stack) == 0
+
+
+if __name__ == "__main__":
+    print(has_valid_parens("()"))
+    print(has_valid_parens("()[]{}"))
+    print(has_valid_parens("(]"))
+    print(has_valid_parens("([)]"))
+    print(has_valid_parens("{[]}"))
+    print(has_valid_parens("((((((((())))))))()"))

From 66a8188a7b4695bc55a04755f539eb2964e9d7fc Mon Sep 17 00:00:00 2001
From: Sergiy Goloviatinski <sergiy.golov@hotmail.com>
Date: Sun, 6 Oct 2019 16:17:28 +0200
Subject: [PATCH 2/2] Solved #1

---
 python/beginner/sum-of-all-numbers_sg.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100755 python/beginner/sum-of-all-numbers_sg.py

diff --git a/python/beginner/sum-of-all-numbers_sg.py b/python/beginner/sum-of-all-numbers_sg.py
new file mode 100755
index 0000000..534776b
--- /dev/null
+++ b/python/beginner/sum-of-all-numbers_sg.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+
+def sum_all(l):
+    low = l[0]
+    high = l[-1]
+
+    if low > high:
+        low, high = high, low
+
+    return sum([i for i in range(low, high+1)])
+
+
+if __name__ == "__main__":
+    print(sum_all([1, 4]))
+    print(sum_all([4, 1]))