The Most Wanted Letter The Most Wanted Letter
Elementary+
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给你一段文本,其中包含不同的英文字母和标点符号。
你要找到其中那个出现最多的 字母,返回的字母必须是 小写形式
找这个“头号通缉字母”时,大小写不重要,所以对于你的搜索而言 "A" == "a"。 注意不要管标点符号、数字和空格,我们只要 字母

如果你找到 两个或两个以上出现频率相同的字母, 那么返回字母表中靠前的那个。 例如“one”包含“o”、“n”、“e”每个字母一次,因此我们选择“e”。

输入: 包含待分析文本的字符串

输出: 那个出现最多的字母的字符串(小写哦)

范例:

assert.strictEqual(mostWanted("Hello World!"), "l");
assert.strictEqual(mostWanted("How...
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