#feat:leetcode p139题题解

src/leetcode/p139/Solution.java

@@ -0,0 +1,24 @@
+package leetcode.p139;
+
+/**
+ * @ProjectName: LeetCode
+ * @FileName: Solution
+ * @Author: 杨逸
+ * @Data:2026/3/3 19:11
+ * @Description: https://leetcode.cn/problems/single-number/description/?envType=study-plan-v2&envId=top-100-liked
+ * 139. 只出现一次的数字
+ */
+public class Solution {
+    /**
+     * 异或运算
+     * @param nums
+     * @return
+     */
+    public int singleNumber(int[] nums) {
+        int result = 0;
+        for (int num : nums) {
+            result ^= num;
+        }
+        return result;
+    }
+}