题解 | 判断字母
判断字母
https://www.nowcoder.com/practice/44d2d63103664913bc243d3836b4f341
using System;
public class Program {
public static void Main() {
char c = char.Parse(Console.ReadLine());
Console.WriteLine(c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' ? "YES" : "NO");
}
}
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