feat: add question 1304

Author: yinxin630

1304.data

@@ -0,0 +1,3 @@
+5
+3
+1

1304.和为零的N个唯一整数.js

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+/*
+ * @lc app=leetcode.cn id=1304 lang=javascript
+ *
+ * [1304] 和为零的N个唯一整数
+ */
+
+ // @lc code=start
+/**
+ * @param {number} n
+ * @return {number[]}
+ */
+var sumZero = function(n) {
+    const result = [];
+
+    if (n % 2 !== 0) {
+        result.push(0);
+    }
+
+    for (let i = 1; i <= n / 2; i++) {
+        result.unshift(-i);
+        result.push(i);
+    }
+
+    return result;
+};
+// @lc code=end