2 files changed, 40 insertions, 0 deletions
diff --git a/AlgoDesignAndTechniqueEdxPython/sources/changingmoney.py b/AlgoDesignAndTechniqueEdxPython/sources/changingmoney.py
new file mode 100644
index 0000000..5369b9e
--- /dev/null
+++ b/AlgoDesignAndTechniqueEdxPython/sources/changingmoney.py
@@ -0,0 +1,17 @@
+# Uses python3
+def getNumOfCoins(m):
+    # coins with denominations of 1, 5, and 10
+    coinCount = 0
+    remainder = 0
+    if m / 10 == 0 & m % 10 == 0:
+        return m / 10
+    coinCount = coinCount + int(m / 10)
+    remainder = m % 10
+    if remainder >= 5:
+        return coinCount + 1 + remainder - 5
+    else:
+        return coinCount + remainder
+
+
+m = int(input())
+print(getNumOfCoins(m))
+\ No newline at end of file
diff --git a/AlgoDesignAndTechniqueEdxPython/tests/changingmoneyTest.py b/AlgoDesignAndTechniqueEdxPython/tests/changingmoneyTest.py
new file mode 100644
index 0000000..efc681e
--- /dev/null
+++ b/AlgoDesignAndTechniqueEdxPython/tests/changingmoneyTest.py
@@ -0,0 +1,23 @@
+'''
+Created on Sep 2, 2018
+
+@author: haidong
+'''
+import unittest
+
+from sources.changingmoney import getNumOfCoins
+
+class Test(unittest.TestCase):
+
+
+    def testName(self):
+        self.assertEqual(1, getNumOfCoins(1))
+        self.assertEqual(2, getNumOfCoins(2))
+        self.assertEqual(2, getNumOfCoins(6))
+        self.assertEqual(6, getNumOfCoins(28))
+        self.assertEqual(100, getNumOfCoins(1000))
+
+
+if __name__ == "__main__":
+    #import sys;sys.argv = ['', 'Test.testName']
+    unittest.main()
+\ No newline at end of file