1 files changed, 22 insertions, 0 deletions
diff --git a/progs/a515.py b/progs/a515.py
new file mode 100644
index 0000000..b57466d
--- /dev/null
+++ b/progs/a515.py
@@ -0,0 +1,22 @@
+def merge(a,b):
+    c = []
+    while len(a) != 0 and len(b) != 0:
+        if a[0] < b[0]:
+            c.append(a[0])
+            a.remove(a[0])
+        else:
+            c.append(b[0])
+            b.remove(b[0])
+    if len(a) == 0:
+        c += b
+    else:
+        c += a
+    return c
+def merge_sort(x):
+    if len(x) == 0 or len(x) == 1:
+        return x
+    else:
+        middle = len(x)//2
+        a = merge_sort(x[:middle])
+        b = merge_sort(x[middle:])
+        return merge(a,b)