1 files changed, 37 insertions, 0 deletions
diff --git a/algorithms/impl/insertion_sort.py b/algorithms/impl/insertion_sort.py
new file mode 100644
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+++ b/algorithms/impl/insertion_sort.py
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+# Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is part of the "Sorting algorithms" project.
+# For details, see https://github.com/egor-tensin/sorting-algorithms.
+# Distributed under the MIT License.
+
+import sys
+
+from ..algorithm import SortingAlgorithm
+
+
+def insertion_sort(xs):
+    for i in range(1, len(xs)):
+        j = i
+        while j > 0 and xs[j - 1] > xs[j]:
+            xs[j], xs[j - 1] = xs[j - 1], xs[j]
+            j -= 1
+    return xs
+
+
+_ALGORITHMS = [
+    SortingAlgorithm('insertion_sort', 'Insertion sort', insertion_sort),
+]
+
+
+def _parse_args(args=None):
+    if args is None:
+        args = sys.argv[1:]
+    return list(map(int, args))
+
+
+def main(args=None):
+    xs = _parse_args(args)
+    print(insertion_sort(list(xs)))
+
+
+if __name__ == '__main__':
+    main()