Change the dir structure slightly

interview_problems/longest_increasing_subsequence.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+__author__ = "bt3"
+
+
+def longest_increasing_subsequence(seq):
+    result, aux = [], []
+    seq.append(-float('infinity'))
+    
+    for i, value in enumerate(seq[:-1]):
+        aux.append(value)
+        if value > seq[i+1]:
+            if len(result) < len(aux):
+                result = aux[:]
+            aux = []
+    return result
+             
+    
+    
+if __name__ == '__main__':
+    seq = [10, -12, 2, 3, -3, 5, -1, 2, -10]
+    result = [-12, 2, 3]
+    assert(longest_increasing_subsequence(seq) == result)
+    
+    seq = [2]
+    result = [2]
+    assert(longest_increasing_subsequence(seq) == result)
+
+    seq = []
+    result = []
+    assert(longest_increasing_subsequence(seq) == result)