update

leetcode-cn/originData/letter-tile-possibilities.json

@@ -12,7 +12,7 @@
             "translatedContent": "<p>你有一套活字字模&nbsp;<code>tiles</code>，其中每个字模上都刻有一个字母&nbsp;<code>tiles[i]</code>。返回你可以印出的非空字母序列的数目。</p>\n\n<p><strong>注意：</strong>本题中，每个活字字模只能使用一次。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>\"AAB\"\n<strong>输出：</strong>8\n<strong>解释：</strong>可能的序列为 \"A\", \"B\", \"AA\", \"AB\", \"BA\", \"AAB\", \"ABA\", \"BAA\"。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>\"AAABBC\"\n<strong>输出：</strong>188\n</pre>\n\n<p><strong>示例 3：</strong></p>\n\n<pre>\n<strong>输入：</strong>\"V\"\n<strong>输出：</strong>1</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= tiles.length &lt;= 7</code></li>\n\t<li><code>tiles</code> 由大写英文字母组成</li>\n</ul>\n",
             "isPaidOnly": false,
             "difficulty": "Medium",
-            "likes": 137,
+            "likes": 138,
             "dislikes": 0,
             "isLiked": null,
             "similarQuestions": "[]",
@@ -143,7 +143,7 @@
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             "hints": [
                 "Try to build the string with a backtracking DFS by considering what you can put in every position."
             ],