save project

diy1.py

-alist = [20,17,9,13,5,6]
-n = len(alist)
-for i in range(0,n-1):
-    for j in range(0,n-1):
-        if alist[j] > alist[j + 1]:
-            alist[j], alist[j + 1] = alist[j + 1], alist[j]
-            print(alist)
+def sum_numbers(num):
+    if num == 1:
+        return 1
+
+    a = sum_numbers(num-1)+1*num
+    return a
+print(sum_numbers(10))