1 files changed, 32 insertions, 0 deletions
diff --git a/challenge-283/steven-wilson/python/ch-2.py b/challenge-283/steven-wilson/python/ch-2.py
new file mode 100644
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+++ b/challenge-283/steven-wilson/python/ch-2.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+from collections import Counter
+
+
+def digit_count_value(integers):
+    """ Given an array of positive integers, return true if for every index i
+    in the range 0 <= i < size of array, the digit i occurs exactly the ints[i]
+    times in the given array otherwise return false.
+
+    >>> digit_count_value([1, 2, 1, 0])
+    True
+    >>> digit_count_value([0, 3, 0])
+    False
+    """
+    if not all(isinstance(i, int) for i in integers):
+        raise ValueError("Array values should be integers")
+
+    if not all(i >= 0 for i in integers):
+        raise ValueError("Array values should be positive")
+
+    counter = Counter(integers)
+    for n, i in enumerate(integers):
+        if i != counter[n]:
+            return False
+    return True
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod(verbose=True)