From df46be1b4580869cfe827a54f18545a469adb82c Mon Sep 17 00:00:00 2001
From: Roger Bell_West <Firedrake@users.noreply.github.com>
Date: Mon, 29 Nov 2021 10:15:27 +0000
Subject: Solutions for challenge #141

---
 challenge-141/roger-bell-west/python/ch-1.py | 36 ++++++++++++++++++++++++++++
 challenge-141/roger-bell-west/python/ch-2.py | 26 ++++++++++++++++++++
 2 files changed, 62 insertions(+)
 create mode 100755 challenge-141/roger-bell-west/python/ch-1.py
 create mode 100755 challenge-141/roger-bell-west/python/ch-2.py

(limited to 'challenge-141/roger-bell-west/python')

diff --git a/challenge-141/roger-bell-west/python/ch-1.py b/challenge-141/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..b1e8726449
--- /dev/null
+++ b/challenge-141/roger-bell-west/python/ch-1.py
@@ -0,0 +1,36 @@
+#! /usr/bin/python3
+
+import unittest
+
+from math import sqrt
+
+def factorcount(n):
+  if n==1:
+    return 1
+  f=2
+  s=int(sqrt(n))
+  if s*s==n:
+    s-=1
+    f+=1
+  for pf in range(2,s+1):
+    if n % pf == 0:
+      f += 2
+  return f
+
+def divisors(count,n):
+  nn=n
+  a=[]
+  t=0
+  while nn:
+    t+=1
+    if factorcount(t)==count:
+      a.append(t)
+      nn-=1
+  return a
+
+class TestDivisors(unittest.TestCase):
+
+        def test_ex1(self):
+          self.assertEqual(divisors(8,10),[24,30,40,42,54,56,66,70,78,88],'example 2')
+
+unittest.main()
diff --git a/challenge-141/roger-bell-west/python/ch-2.py b/challenge-141/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..1bcf983c5f
--- /dev/null
+++ b/challenge-141/roger-bell-west/python/ch-2.py
@@ -0,0 +1,26 @@
+#! /usr/bin/python3
+
+import unittest
+
+def likenumber(source,factor):
+  s=[int(i) for i in str(source)]
+  m=len(s)
+  n=0
+  for mask in range(1,(1<<m)-1):
+    c=0
+    for di in range(m):
+      if mask & 1<<di:
+        c=c*10+s[di]
+    if c % factor == 0:
+      n+=1
+  return n
+
+class TestLikenumber(unittest.TestCase):
+
+        def test_ex1(self):
+          self.assertEqual(likenumber(1234,2),9,'example 1')
+
+        def test_ex2(self):
+          self.assertEqual(likenumber(768,4),3,'example 2')
+
+unittest.main()
-- 
cgit