diff --git a/diy2.py b/diy2.py
new file mode 100644
index 0000000..b6d0693
--- /dev/null
+++ b/diy2.py
@@ -0,0 +1,5 @@
+for i in range(1,10): # 行
+    for j in range(1,10):
+        print(i,"x",j,"=",(j*i),end="  ")
+    print()
+# 使用变量i和j，代替乘法算式里面的元素，打印出单个乘法算式
\ No newline at end of file
diff --git a/diy4.py b/diy4.py
new file mode 100644
index 0000000..e78a7b7
--- /dev/null
+++ b/diy4.py
@@ -0,0 +1,3 @@
+i=4
+j=9
+print(i,"*",j,"=",(i*j))
\ No newline at end of file