diff --git a/activity-school b/activity-school
index f2ff5333080150375ce51b4e81fe60feff5907cf..e3039d45f32adcbac55d745197aa67e2d487bb6f 160000
--- a/activity-school
+++ b/activity-school
@@ -1 +1 @@
-Subproject commit f2ff5333080150375ce51b4e81fe60feff5907cf
+Subproject commit e3039d45f32adcbac55d745197aa67e2d487bb6f
diff --git a/codes/Jinzj_828/15842649.java b/codes/Jinzj_828/15842649.java
new file mode 100644
index 0000000000000000000000000000000000000000..8e911f6b33de07fb78d225f3cf4ba136d7f8e45e
--- /dev/null
+++ b/codes/Jinzj_828/15842649.java
@@ -0,0 +1,18 @@
+/**
+ * 冒泡排序函数
+ * @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 - 1 - i; j++) {
+            if (a[j] > a[j + 1]) {
+                // 交换位置
+                int temp = a[j];
+                a[j] = a[j + 1];
+                a[j + 1] = temp;
+            }
+        }
+    }
+} //end
+
diff --git a/codes/Jinzj_828/15842649id.java b/codes/Jinzj_828/15842649id.java
new file mode 100644
index 0000000000000000000000000000000000000000..8e911f6b33de07fb78d225f3cf4ba136d7f8e45e
--- /dev/null
+++ b/codes/Jinzj_828/15842649id.java
@@ -0,0 +1,18 @@
+/**
+ * 冒泡排序函数
+ * @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 - 1 - i; j++) {
+            if (a[j] > a[j + 1]) {
+                // 交换位置
+                int temp = a[j];
+                a[j] = a[j + 1];
+                a[j + 1] = temp;
+            }
+        }
+    }
+} //end
+