diff --git a/codes/Sun_gh_pku/18171390.java b/codes/Sun_gh_pku/18171390.java
new file mode 100644
index 0000000000000000000000000000000000000000..ada2ebd9e1bd82697a27527b878d02b061b42671
--- /dev/null
+++ b/codes/Sun_gh_pku/18171390.java
@@ -0,0 +1,23 @@
+/**
+ * 冒泡排序函数
+ * aa bb cc
+ * @param a 待排序的数组
+ * @param n 待排序的数组长度
+ */
+public static void bubbleSort(int [] a, int n){
+    //
+    for (int i = 0; i < n - 1; i++) {
+        for (int j = 0; j < n - i - 1; j++) {
+            if (a[j] > a[j + 1]) {
+                // 交换 a[j] 和 a[j + 1]
+                int temp = a[j];
+                a[j] = a[j + 1];
+                a[j + 1] = temp;
+            }
+        }
+    }
+    //你的代码，使无序数组 a 变得有序
+    //.
+    ...
+
+} //end