Completed close_far.py

Author: Alfredo Miranda

python/logic-2/close_far.py

@@ -0,0 +1,12 @@
+# Given three ints, a b c, return True if one of b or c is "close" (differing 
+# from a by at most 1), while the other is "far", differing from both other 
+# values by 2 or more.
+def close_far(a, b, c):
+    return (is_close(a, b) and is_far(a, b, c)) or \ 
+        (is_close(a, c) and is_far(a, c, b))
+        
+def is_close(a, b):
+    return abs(a - b) <= 1
+    
+def is_far(a, b, c):
+    return abs(a - c) >= 2 and abs(b - c) >= 2