diff --git a/내림차순 b/내림차순
new file mode 100644
index 0000000..d762faa
--- /dev/null
+++ b/내림차순
@@ -0,0 +1,29 @@
+import random
+r=random.randint(1, 10)
+a=0
+b=0
+c=0
+t=0
+u=0
+list=[]
+
+while t<4:
+    r=random.randint(1, 10)
+    list.append(r)
+    t+=1
+
+print(list)
+
+t=0
+while t<len(list):
+    u=t+1
+    while u < len(list):
+        if list[t]>list[u]:
+            c = list[t]
+            list[t] = list[u]
+            list[u] = c
+        u+=1
+    t+=1
+
+
+print(list)
\ No newline at end of file