diff --git a/src/main/java/com/cool/hot100/strange_skills_cunning/Num136.java b/src/main/java/com/cool/hot100/strange_skills_cunning/Num136.java
new file mode 100644
index 0000000..f9966b1
--- /dev/null
+++ b/src/main/java/com/cool/hot100/strange_skills_cunning/Num136.java
@@ -0,0 +1,23 @@
+package com.cool.hot100.strange_skills_cunning;
+
+/**
+ * Created with IntelliJ IDEA.
+ *
+ * @Author: Cool
+ * @Date: 2024/09/30/3:20
+ * @Description: 136. 只出现一次的数字
+ * Hard 1
+ * Level 3
+ * DayNumber 4
+ * @link https://leetcode.cn/problems/single-number/description/?envType=study-plan-v2&envId=top-100-liked
+ */
+public class Num136 {
+    //位运算
+    public int singleNumber(int[] nums) {
+        int res=0;
+        for(int num:nums){
+            res^=num;
+        }
+        return res;
+    }
+}