[Python]Challenge_6(Reviewed) (YearOfProgramming#425)

* Challenge_3 in Python

* Challenge_3 in Python

* Started challenge_4

* Challenge_4 in Python

* Challenge_5 in Python

* Challenge 6 in Python

* Fixed loop to prevent missing 0 value

* Added Python version number to README

challenge_5/python/ajschrier/README.md

@@ -1,5 +1,7 @@
 # Challenge 5 - Find the Difference
 
+*Python Version:* 2.7
+
 Counts all the characters in a string and finds the added letter
 
 ## Functions

challenge_6/python/ajschrier/IntRange.py

@@ -0,0 +1,41 @@
+ARROW = '->'
+
+
+def outputRange(inputList):
+    # Helper Vars
+    outputList = []
+    rangeStart = None
+    rangeEnd = None
+
+    for i in inputList:
+        # Detect the beginning of the list
+        if rangeStart is None:
+            rangeStart = i
+            rangeEnd = i
+        # Check for invalid sequence
+        elif rangeEnd is not i-1:
+            # If vars are equal, no sequence is being terminated
+            if rangeStart is rangeEnd:
+                rangeStart, rangeEnd = i, i
+            # If they're not, add the terminated sequence to the list
+            # and continue
+            else:
+                outputList.append('{}{}{}'.format(rangeStart, ARROW, rangeEnd))
+                rangeStart, rangeEnd = i, i
+        # If none of the above, continue the current sequence
+        else:
+            rangeEnd = i
+
+    # Check to see if a sequence is in progress at the end of the loop
+    if rangeStart is not rangeEnd:
+                outputList.append('{}{}{}'.format(rangeStart, ARROW, rangeEnd))
+    return outputList
+
+
+def main():
+    print outputRange([1, 2, 3, 4, 8, 9, 10, 12, 13, 14])
+    print outputRange([1, 2, 3, 4, 5, 8, 9, 10])
+
+
+if __name__ == '__main__':
+    main()

challenge_6/python/ajschrier/IntRangeTests.py

@@ -0,0 +1,20 @@
+from IntRange import outputRange
+import unittest
+
+
+class outputRangeTests(unittest.TestCase):
+    """test outputRange Function"""
+    def test1(self):
+        self.assertEqual(outputRange([1, 2, 3, 4, 8, 9, 10, 12, 13, 14]),
+                         ["1->4", "8->10", "12->14"])
+
+    def test2(self):
+        self.assertEqual(outputRange([1, 2, 3, 4, 5, 8, 9, 10]),
+                         ["1->5", "8->10"])
+
+    def test3(self):
+        self.assertEqual(outputRange([]),
+                         [])
+
+if __name__ == '__main__':
+    unittest.main()

challenge_6/python/ajschrier/README.md

@@ -0,0 +1,16 @@
+# Challenge 6 - Integer Range
+
+*Python Version:* 2.7
+
+Finds ranges of integers from an ordered integer list.
+
+## Functions
+
+### outputRange
+
+**Input:** list(integer)
+**Output:**list(string)
+
+Checks the list for sequences.
+
+Starts by maintaining the current sequence. If there is a continuation found, store the new end of the sequence. Add the sequence to the output list after continuation breaks, skipping cases where the current sequence is length 1. Return the list of sequences, or an empty list if no sequences exist.