[英]How to find how many numbers and letters are on a string
我正在验证密码。 我需要检查密码中有多少个字母和数字。 如果少于2个数字或少于2个字母,则应警告用户密码无效。
对于密码中的每个字符,请对照ASCII表检查并计算字母和数字的出现:
考虑在验证中添加特殊字符。
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