请注意：这意味着，与元音不同同，插在中间的字符 H 和 W 不会对组合相同代码的字母形成障碍。

Note that this means, unlike vowels, intervening H and W characters do not act as a barrier to combining runs of letters with the same code.

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下两个for循环迭代该字符串并计算其包含多少个元音字母(“a”、“e”、“i”、“o”或“u”)。

The next two for loops iterate through the string and count how many vowels (' a ', 'e', 'I', 'o', or 'u') it contains.

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如果该字符与某个元音匹配，则该元音的计数器加1。

If the character matches one of the vowels, add 1 to that vowel's count.

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