diff --git a/codes/soft_lipa/18831489.java b/codes/soft_lipa/18831489.java
new file mode 100644
index 0000000000000000000000000000000000000000..0458ee9951d5a44d243a54f214d02855999df872
--- /dev/null
+++ b/codes/soft_lipa/18831489.java
@@ -0,0 +1,21 @@
+
+/**
+ * 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){
+    // 你的代码，使无序数组 a 变得有序
+	for (int i = 0; i < n - 1; i++) {
+            for (int j = 0; j < n - i - 1; j++) {
+                if (a[j] > a[j + 1]) {
+                    int temp = a[j];
+                    a[j] = a[j + 1];
+                    a[j + 1] = temp;
+                }
+            }
+        }
+
+} //end
+