Add InterviewCake.com examples

Adds some of the code I generated while studying for a role transfer at Google
using the fantastic resource, InterviewCake.com. This work predates the
mono-repo.

I should think of ways to DRY up this code and the code in
crack_the_coding_interview, but I'm afraid I'm creating unnecessary work for
myself that way.

data_structures_and_algorithms/top-scores.py

@@ -0,0 +1,25 @@
+from collections import deque
+
+# list:
+# array:
+# vector:
+# bit-{array,vector}:
+
+
+def sort(xs, highest):
+    v = [0] * (highest + 1)
+    result = deque()
+
+    for x in xs:
+        v[x] += 1
+
+    for i, x in enumerate(v):
+        if x > 0:
+            result.appendleft(i)
+
+    return list(result)
+
+
+assert sort([37, 89, 41, 100, 65, 91, 53],
+            100) == [100, 91, 89, 65, 53, 41, 37]
+print("Tests pass!")