feat: 更新每日一题参考答案

Author: luzhipeng

daily/answers/744.find-smallest-letter-greater-than-target.js

@@ -0,0 +1,26 @@
+/*
+ * @lc app=leetcode id=744 lang=javascript
+ *
+ * [744] Find Smallest Letter Greater Than Target
+ */
+/**
+ * @param {character[]} letters
+ * @param {character} target
+ * @return {character}
+ */
+var nextGreatestLetter = function(letters, target) {
+    let start = 0;
+    let end = letters.length - 1;
+
+    while(start < end) {
+        const mid = start + ((end - start) >> 1);
+        if (letters[mid] <= target) {
+            start = mid + 1;
+        } else {
+            end = mid;
+        }
+    }
+    // 题目要求找不到的时候，就返回第一个元素(好诡异啊)
+    return letters[end] > target ? letters[end] : letters[0];
+};
+