diff --git a/codes/guqi123/15821287.java b/codes/guqi123/15821287.java
new file mode 100644
index 0000000000000000000000000000000000000000..24f513b3219ac31ac3dcffe774647aa7bfdac254
--- /dev/null
+++ b/codes/guqi123/15821287.java
@@ -0,0 +1,11 @@
+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]) {
+                int temp = a[j];  
+                a[j] = a[j + 1];  
+                a[j + 1] = temp;  
+            }  
+        }  
+    }  
+}