修改 0054.替换数字.md Java版本解法二 #2933
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取出字符串中的字符后，为了判断该字符是不是数字字符，应该将其和字符常量 '0' 比较，而不是和整型常量 0 比较。题目中说明输入字符串只包含小写字母和数字字符，所以原本的写法也能提交通过。 |
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