L1-016 查验身份证

L1-016 查验身份证是一道水题，属于PAT (Programming Ability Test)的题目之一。这道题主要考察的是对字符串的处理和校验算法。根据输入的身份证号码，我们需要判断这些号码是否合法。具体要求是判断前17位是否全为数字且最后一位的校验码计算准确。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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