这个正则表达式应该适用于你的输入验证:

This regex should work for you for validation of your inputs:

^d{1,2}/d{1,2}/d{4} d{1,2}:d{1,2}:d{1,2} [AP]Mz

正则表达式演示

这将验证以下任一输入行:

This will validate either of these inputs lines:

10/22/2016 9:15:32 PM
9/9/2016 9:9:5 AM