diff --git a/codes/Shephatiah/18693174.java b/codes/Shephatiah/18693174.java
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+++ b/codes/Shephatiah/18693174.java
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+public class BubbleSort {
+    public static void bubbleSort(int[] arr) {
+        int n = arr.length;
+        // 一共进行n - 1轮排序
+        for (int i = 0; i < n - 1; i++) {
+            // 每一轮比较的次数会逐渐减少
+            for (int j = 0; j < n - 1 - i; j++) {
+                // 比较相邻元素，如果前面的大于后面的则交换
+                if (arr[j] > arr[j + 1]) {
+                    int temp = arr[j];
+                    arr[j] = arr[j + 1];
+                    arr[j + 1] = temp;
+                }
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        int[] arr = {5, 4, 3, 2, 1};
+        bubbleSort(arr);
+        for (int num : arr) {
+            System.out.print(num + " ");
+        }
+    }
+}